better support for airgap mode 'exists', secure rke2 token by default, allow setting rke2_node_name, implement local artifact download and push to remote fallback

[simonfelding]

Description

There's a bunch of stuff in this commit. I realize it could have been multiple pull requests. Sorry about that.

• added better support for airgap mode 'exists' in rke2.yml
• deprecate rke2_snapshooter spelling error
• secure rke2 token by default
• fix indent of registries config (broke with tls_no_verify set)
• allow setting rke2_node_name as node name
• split logical and to multiple lines for readability
• made the role guess if server or agent based on group it belongs to
• implement local artifact download and push to remote fallback
• updated documentation to match

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
• Small minor change not affecting the Ansible Role code (GitHub Actions Workflow, Documentation etc.)

How Has This Been Tested?

reset my local cluster entirely and ran each feature against it.

[MonolithProjects]

Hi @simonfelding, please resolve the conflicts

[simonfelding]

@MonolithProjects I fixed the conflicts, is it okay now?

[Duke1715]

@MonolithProjects Hi! When can we expect the merge? I found some interesting changes there for use that I would like to see in the master.

[simonfelding]

@MonolithProjects Hi! When can we expect the merge? I found some interesting changes there for use that I would like to see in the master.

Maybe I should split it into multiple PRs, it got kind of large..

[MonolithProjects]

@MonolithProjects Hi! When can we expect the merge? I found some interesting changes there for use that I would like to see in the master.

Maybe I should split it into multiple PRs, it got kind of large..

Yeah... I think that's a good idea. Plus I see in this PR commits which are already in Master and this makes it harder to review. Please split it and I am sure I can find a time to check it 😉 Thanks!