Fix ansible-lint errors

[stewartfrancis]

Fix a collection of ansible-lint errors in tests

[stewartfrancis]

We have a problem here where I've bumped ansible-lint to the version that's used in the AAP approval workflow, and that's not compatible with ansible-core 2.15. To address this, I'm going to need to make a change in the CI pipeline to only run ansible-lint on compatible versions of Ansible. This won't be mergeable until that's ready, and both PRs will need to be merged simultaneously.