* Support stop a running Jenkins build. Meanwhile enrich document content and test cases.
* Fix the inconsistencies regarding the function name.
* Submit the changelog and fix a PEP8 issue.
* Remedy whitespace related PEP8 issues.
* Implement the idempotent test case for the stop build function.
* Make sure it returns proper changed status when we stop a build repeatedly.
* Fix incorrect usages on comparison with True or False and incorrect usages on validating the changed status.
* In this mocking situation, adjust the mock return value and test case to perform unit testing.
* Implement JenkinsMockIdempotent() to mock return value in idempotent test cases.
* Fix issues reported by CI.
* Refactor the code to avoid CI exception and remove get_build_status() from mock function as they should not be there.
* Update plugins/modules/web_infrastructure/jenkins_build.py
Co-authored-by: Felix Fontein <felix@fontein.de>
