* Rename from community.kubernetes to kubernetes.core
This goes through and renames community.kubernetes to kubernetes.core.
Most of this was generated from the downstream build script that was
used on the community repository, plus whatever hand edits I could find
that were needed.
The downstream build and test process has also been removed as this
repository is now the downstream repository.
* Fix CONTRIBUTING.md
* refactoring for ansible_module.turbo integration
This refactoring prepares the integration of `ansible_module.turbo`
- Delay the loading of `common.py`, move the shared structure in
`args_common`.
- Avoid the use of one single object per module, this to increase the
amount of Python structure that we can cache.
- Cache the Kubernetes client.
See: https://github.com/ansible-collections/community.kubernetes/pull/270
Co-authored-by: Jill Rouleau <jill.rouleau@bespokess.com>