Change:
- Initial set of changes for renaming to ansible-core
- Includes changelog fragment changes from base -> core
- Does NOT include docs changes
- Modifies detection stuff in setup.py to support ansible<2.9 and ansible-base
Test Plan:
- ci_complete
Replace the ansible-base changelog linting and generation tool with antsibull-changelog and make it available for linting collections. Previously changelog linting was limited to ansible-base.
* Split out sanity test requirements.
* Run each --venv test separately.
This provides verification that the requirements for each test are properly specified.
* Use a separate requirements file per sanity test.
* Skip setuptools/cryptography setup for sanity.
* Eliminate pyyaml missing warning.
* Eliminate more pip noise.
* Fix conflicting generate_pip_install commands.
* Add changelog fragment.
