jenkins_credentials: new module to manage Jenkins credentials (#10170)

* Added Jenkins credentials module to manage Jenkins credentials

* Added Jenkins credentials module to manage Jenkins credentials

* Added import error detection, adjusted indentation, and general enhancements.

* Added py3 requirement and set files value to avoid errors

* Added username to BOTMETA. Switched to format() instead of f strings to support py 2.7, improved delete function, and added function to read private key

* Remove redundant message

Co-authored-by: Felix Fontein <felix@fontein.de>

* Replaced requests with ansible.module_utils.urls, merged check domain and credential functions, and made minor adjustments to documentation

* Adjusted for py 2.7 compatibility

* Replaced command with state.

* Added managing credentials within a folder and made adjustments to documentation

* Added unit and integration tests, added token managament, and adjusted documentation.

* Added unit and integration tests, added token management, and adjusted documentation.(fix)

* Fix BOTMETA.yml

* Removed files and generate them at runtime.

* moved id and token checks to required_if

* Documentation changes, different test setup, and switched to Ansible testing tools

* Fixed typos

* Correct indentation.

Co-authored-by: Felix Fontein <felix@fontein.de>

---------

Co-authored-by: Felix Fontein <felix@fontein.de>

tests/integration/targets/jenkins_credential/README.md

@@ -0,0 +1,16 @@
+<!--
+Copyright (c) Ansible Project
+GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt)
+SPDX-License-Identifier: GPL-3.0-or-later
+-->
+
+The integration test can be performed as follows:
+
+```
+# 1. Start docker-compose:
+docker-compose -f tests/integration/targets/jenkins_credential/docker-compose.yml down
+docker-compose -f tests/integration/targets/jenkins_credential/docker-compose.yml up -d
+
+# 2. Run the integration tests:
+ansible-test integration jenkins_credential --allow-unsupported -v
+```