To avoid rate limiting errors, CI (currently Azure Devops) logs into the
container registry (currently AWS ECR). Outside CI this is unnnecessary and
makes it harder to run the tests, because very few people have access to a
suitable AWS secret token.
Following this change `aws ecr-public get-login-password` will only be run if
the environment variable $TF_BUILD==True. This is set by Azure Pipelines
jobs. If the CI platform is changed then another indicator should be used.
https://adamj.eu/tech/2020/03/09/detect-if-your-tests-are-running-on-ci/
Also
- Simplifies adding support for additional Ansible versions
- Unifies Python package versioning in CI and local test environments
- Matches Python versions tested, with those declared in setup.py
- Expands targets covered by automated Ansible tests to
- centos6, centos8
- debian9, debian11
- ubuntu1604, ubuntu2004
Alex Willmer