chore: move samples from python-docs-samples (#41)

* Add initial Secret Manager samples [(#2664)](#2664)

* Bump secretmanager version [(#2699)](#2699)

This bumps to the version that doesn't have a bunch of deprecation
warnings.

* Fix a small comment typo [(#2714)](#2714)

* Add Secret Manager IAM samples [(#2749)](#2749)

* Add Secret Manager IAM samples

* Use an envvar for the iam user

* Add env var to secrets.

Co-authored-by: Kurtis Van Gent <31518063+kurtisvg@users.noreply.github.com>

* SecretManager update v1beta1->v1 [(#3065)](#3065)

Client library has been updated: https://pypi.org/project/google-cloud-secret-manager/

* Simplify noxfile setup. [(#2806)](#2806)

* chore(deps): update dependency requests to v2.23.0

* Simplify noxfile and add version control.

* Configure appengine/standard to only test Python 2.7.

* Update Kokokro configs to match noxfile.

* Add requirements-test to each folder.

* Remove Py2 versions from everything execept appengine/standard.

* Remove conftest.py.

* Remove appengine/standard/conftest.py

* Remove 'no-sucess-flaky-report' from pytest.ini.

* Add GAE SDK back to appengine/standard tests.

* Fix typo.

* Roll pytest to python 2 version.

* Add a bunch of testing requirements.

* Remove typo.

* Add appengine lib directory back in.

* Add some additional requirements.

* Fix issue with flake8 args.

* Even more requirements.

* Readd appengine conftest.py.

* Add a few more requirements.

* Even more Appengine requirements.

* Add webtest for appengine/standard/mailgun.

* Add some additional requirements.

* Add workaround for issue with mailjet-rest.

* Add responses for appengine/standard/mailjet.

Co-authored-by: Renovate Bot <bot@renovateapp.com>

* chore: some lint fixes [(#3749)](#3749)

* chore(deps): update dependency google-cloud-secret-manager to v1 [(#3846)](#3846)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [google-cloud-secret-manager](https://github.com/googleapis/python-secret-manager) | major | `==0.2.0` -> `==1.0.0` |

---

### Release Notes

<details>
<summary>googleapis/python-secret-manager</summary>

### [`v1.0.0`](https://github.com/googleapis/python-secret-manager/blob/master/CHANGELOG.md#&#8203;100-httpswwwgithubcomgoogleapispython-secret-managercomparev020v100-2020-05-20)

[Compare Source](https://github.com/googleapis/python-secret-manager/compare/v0.2.0...v1.0.0)

##### Features

-   release as production/stable ([#&#8203;24](https://www.github.com/googleapis/python-secret-manager/issues/24)) ([39a8cc8](https://www.github.com/googleapis/python-secret-manager/commit/39a8cc8f631569c82d1cbffc6a9bbb440d380683))

</details>

---

### Renovate configuration

:date: **Schedule**: At any time (no schedule defined).

:vertical_traffic_light: **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

:recycle: **Rebasing**: Never, or you tick the rebase/retry checkbox.

:no_bell: **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [WhiteSource Renovate](https://renovate.whitesourcesoftware.com). View repository job log [here](https://app.renovatebot.com/dashboard#GoogleCloudPlatform/python-docs-samples).

* Replace GCLOUD_PROJECT with GOOGLE_CLOUD_PROJECT. [(#4022)](#4022)

* chore(deps): update dependency pytest to v5.4.3 [(#4279)](#4279)

* chore(deps): update dependency pytest to v5.4.3

* specify pytest for python 2 in appengine

Co-authored-by: Leah Cole <coleleah@google.com>

* Update dependency pytest to v6 [(#4390)](#4390)

* chore: update templates

Co-authored-by: Seth Vargo <seth@sethvargo.com>
Co-authored-by: Kurtis Van Gent <31518063+kurtisvg@users.noreply.github.com>
Co-authored-by: gwhitehawk <gwhitehawk@gmail.com>
Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Takashi Matsuo <tmatsuo@google.com>
Co-authored-by: Leah Cole <coleleah@google.com>

secretmanager/AUTHORING_GUIDE.md

@@ -0,0 +1 @@
+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/AUTHORING_GUIDE.md

secretmanager/CONTRIBUTING.md

@@ -0,0 +1 @@
+See https://github.com/GoogleCloudPlatform/python-docs-samples/blob/master/CONTRIBUTING.md