update saltcheck module for Neon

[mchugh19]

What does this PR do?

Rebase of #53068 on master

supersedes #52434 #52541 #53024 and #54553

master ports: #49195 #49395 and #53068

• Optimize test copying (replace cp.cache_master with logic to cp.cache_dir on used salt states) @lomeroe
• Create saltcheck wrapper for use in salt-ssh. Handles cp.cache_dir functionality by creating a tarball, copying, and extracting on ssh minion. Then calls the regular saltcheck functions.
• allow custom saltcheck test locations inside a state/formula's folder @lomeroe
• provide more information on invalid tests @lomeroe

Previous Behavior

1. saltcheck, being unable to run cp.cache_* from a salt-ssh minion, was not able to locate test files and did not function.
2. saltcheck was only able to parse an assertion_section of a single depth
3. cp.cache_master takes more time and I/O than necessary

New Behavior

1. Wrapper written to gather needed state directories, tarball them, copy tar to salt-ssh minion, extract to local cache directory, and cleanup. Then hands over saltcheck running to the local saltcheck module.
2. assertion_section can now be nested dicts or lists
3. Now uses cp.cache_dir on needed state directories

Tests written?

Yes - new integration and ssh integration tests

Commits signed with GPG?

No

[mchugh19]

If this looks good and the tests pass, the listed replaces PRs can all be closed, and the referenced master ports can be marked complete.

[dwoz]

@mchugh19 Please resolve the merge conflicts

[mchugh19]

Looks like the windows test failures are unrelated to this PR

AssertionError: There are some functions which do not have a docstring or do not have an example:
No docstring:
  - pkg.get_package_info

[waynew]

@mchugh19 looks like there's a merge conflict here, but the windows tests passed. Mind resolving that conflict?

[waynew]

Also this test failure but it doesn't look like it's related, so it might be a flaky test?

[mchugh19]

Resolved conflict with release notes

[dwoz]

Windows tests passed even though the build failed

OK (total=9658, skipped=1248, passed=8410, failures=0, errors=0)

Merging