Fix #423:  Expose the 'more_results' value fetched from the back-end.

This is a follow up to a discussion in googleapis#423 and googleapis#425.

Also
- Adding fetch_page() method to return the needed properties
  no longer available on the Query object.
- Made fetch_page() fail if more_results is `NOT_FINISHED`, which
  seems to be intended for batched requests.
- Added start_cursor and end_cursor properties to Query.
- Updated docstrings to reflect change
- Updated tests to ensure the returned cursor was always set.
- Streamlined fetch()/fetch_page() tests to run via a single
  tweakable helper.
- Updated a datastore.connection test to construct and return an
  initialized QueryResultBatch to simulate a valid cursor.
- Updated regression.clear_datastore and regression.datastore to
  reflect changed API surface.

This is a follow up to a discussion in googleapis#423 and googleapis#425.

Also
- Adding fetch_page() method to return the needed properties
  no longer available on the Query object.
- Made fetch_page() fail if more_results is `NOT_FINISHED`, which
  seems to be intended for batched requests.
- Added start_cursor and end_cursor properties to Query.
- Updated docstrings to reflect change
- Updated tests to ensure the returned cursor was always set.
- Streamlined fetch()/fetch_page() tests to run via a single
  tweakable helper.
- Updated a datastore.connection test to construct and return an
  initialized QueryResultBatch to simulate a valid cursor.
- Updated regression.clear_datastore and regression.datastore to
  reflect changed API surface.

This is a follow up to a discussion in googleapis#423 and googleapis#425.

Also
- Adding fetch_page() method to return the needed properties
  no longer available on the Query object.
- Made fetch_page() fail if more_results is `NOT_FINISHED`, which
  seems to be intended for batched requests.
- Added start_cursor and end_cursor properties to Query.
- Updated docstrings to reflect change
- Updated tests to ensure the returned cursor was always set.
- Streamlined fetch()/fetch_page() tests to run via a single
  tweakable helper.
- Updated a datastore.connection test to construct and return an
  initialized QueryResultBatch to simulate a valid cursor.
- Updated regression.clear_datastore and regression.datastore to
  reflect changed API surface.

fix(deps): require proto-plus >= 1.22.0

fix(deps): require proto-plus >= 1.22.0

fix(deps): require proto-plus >= 1.22.0

fix(deps): require proto-plus >= 1.22.0

Source-Link: googleapis/synthtool@56da63e
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:993a058718e84a82fda04c3177e58f0a43281a996c7c395e0a56ccc4d6d210d7

…"parent" parameter (#425)

* docs: Update documentation for Security Command Center *.assets.list "parent" parameter

PiperOrigin-RevId: 501630229

Source-Link: googleapis/googleapis@914dc31

Source-Link: googleapis/googleapis-gen@3bb94cc
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiM2JiOTRjY2E4NjI4Y2QzYzhlZjA5NGQ4NTFjZDcwYjQ1YTExOTMxOSJ9

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

* docs(samples): Added comments

* changed comment

🤖 I have created a release \*beep\* \*boop\*
---
## [2.10.0](https://www.github.com/googleapis/python-dialogflow/compare/v2.9.1...v2.10.0) (2021-11-12)


### Features

* add context manager support in client ([#416](https://www.github.com/googleapis/python-dialogflow/issues/416)) ([317187c](https://www.github.com/googleapis/python-dialogflow/commit/317187cbaacc6889d6fff5d7ea483fe1bc2cd9ee))
* add document metadata filter in article suggestion ([#437](https://www.github.com/googleapis/python-dialogflow/issues/437)) ([56a6e11](https://www.github.com/googleapis/python-dialogflow/commit/56a6e11622f73c6d302a5f43142ceb289b334fd1))
* add smart reply model in human agent assistant ([56a6e11](https://www.github.com/googleapis/python-dialogflow/commit/56a6e11622f73c6d302a5f43142ceb289b334fd1))
* add support for python 3.10 ([#422](https://www.github.com/googleapis/python-dialogflow/issues/422)) ([652e2e8](https://www.github.com/googleapis/python-dialogflow/commit/652e2e8d860f369b62e7866d6cf220204740ade8))
* **v2:** added support to configure security settings, language code and time zone on conversation profile ([#431](https://www.github.com/googleapis/python-dialogflow/issues/431)) ([6296673](https://www.github.com/googleapis/python-dialogflow/commit/629667367d7098cfb62bae1b6e48cc11a72b9fbc))


### Bug Fixes

* **deps:** drop packaging dependency ([fd06e9f](https://www.github.com/googleapis/python-dialogflow/commit/fd06e9fe8626ac3d86175518c52ff14efebc0f7b))
* **deps:** require google-api-core >= 1.28.0 ([fd06e9f](https://www.github.com/googleapis/python-dialogflow/commit/fd06e9fe8626ac3d86175518c52ff14efebc0f7b))


### Documentation

* clarified meaning of the legacy editions ([#426](https://www.github.com/googleapis/python-dialogflow/issues/426)) ([d7a7544](https://www.github.com/googleapis/python-dialogflow/commit/d7a7544ce69cb357d7cad13e9a44afe26c6d3cf5))
* clarified semantic of the streaming APIs ([d7a7544](https://www.github.com/googleapis/python-dialogflow/commit/d7a7544ce69cb357d7cad13e9a44afe26c6d3cf5))
* list oneofs in docstring ([fd06e9f](https://www.github.com/googleapis/python-dialogflow/commit/fd06e9fe8626ac3d86175518c52ff14efebc0f7b))
* **samples:** Added comments ([#425](https://www.github.com/googleapis/python-dialogflow/issues/425)) ([f5d40dc](https://www.github.com/googleapis/python-dialogflow/commit/f5d40dc9b4bb57b8830dcd6541a2a1189a6c9780))
* **v2beta1:** clarified meaning of the legacy editions ([fd06e9f](https://www.github.com/googleapis/python-dialogflow/commit/fd06e9fe8626ac3d86175518c52ff14efebc0f7b))
* **v2beta1:** clarified semantic of the streaming APIs ([fd06e9f](https://www.github.com/googleapis/python-dialogflow/commit/fd06e9fe8626ac3d86175518c52ff14efebc0f7b))
* **v2beta1:** recommend AnalyzeContent for future users ([#420](https://www.github.com/googleapis/python-dialogflow/issues/420)) ([1afdab3](https://www.github.com/googleapis/python-dialogflow/commit/1afdab3b50c98cc082b150ff408d0f07f11f9cf3))
* **v2:** recommend AnalyzeContent for future users ([#421](https://www.github.com/googleapis/python-dialogflow/issues/421)) ([c6940a9](https://www.github.com/googleapis/python-dialogflow/commit/c6940a9f974af95037616bd1affb34d8db4405c9))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: Anthonios Partheniou <partheniou@google.com>

…1.2 (#425)

Co-authored-by: Anthonios Partheniou <partheniou@google.com>

- [ ] Regenerate this pull request now.

feat: Add tags support
feat: Add RelatedAsset and deprecate RelatedAssets for relationship GA

*The previous representation of the relationship feature is deprecated and unimplemented. The RelatedAsset message represents the new stable format.

PiperOrigin-RevId: 449306805

Source-Link: googleapis/googleapis@3d7bd9d

Source-Link: googleapis/googleapis-gen@71a93d0
Copy-Tag: eyJwIjoiLmdpdGh1Yi8uT3dsQm90LnlhbWwiLCJoIjoiNzFhOTNkMDVkNjA3NjI3MWQwNGI3NTkyZjdmYWQwZDNmMGM3YTA0MCJ9

Source-Link: https://togithub.com/googleapis/synthtool/commit/eaef28efd179e6eeb9f4e9bf697530d074a6f3b9
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:f8ca7655fa8a449cadcabcbce4054f593dcbae7aeeab34aa3fcc8b5cf7a93c9e

fix(deps): require proto-plus >= 1.22.0

Source-Link: googleapis/synthtool@c4dd595
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:ce3c1686bc81145c81dd269bd12c4025c6b275b22d14641358827334fddb1d72

Source-Link: https://togithub.com/googleapis/synthtool/commit/eaef28efd179e6eeb9f4e9bf697530d074a6f3b9
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:f8ca7655fa8a449cadcabcbce4054f593dcbae7aeeab34aa3fcc8b5cf7a93c9e

fix(deps): require proto-plus >= 1.22.0

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Additional clean up following
googleapis/google-auth-library-python-oauthlib#417

Source-Link: googleapis/synthtool@69fabae
Post-Processor: gcr.io/cloud-devrel-public-resources/owlbot-python:latest@sha256:562802bfac02e012a6ac34eda282f81d06e77326b82a32d7bbb1369ff552b387

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

* chore(deps): update all dependencies

* revert changes

* revert sqlalchemy

* revert pytest

* revert pytest

* chore: update grpcio to match grpcio-status

Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

In `_retry.is_transient_error`, we now check to make sure the exception
is an instance of `grpc.Call` before examining its `code` attribute. We
also make sure `code` is callable before calling it.

Fixes #415

* test: presubmit against Lite samples

* mark new presubmit test required

…database function crash (#425)

Fixes #409