expand Vault CI matrix, announce deprecation of Vault dynamic SSH keys

[briantist]

Vault Dynamic SSH Keys

This feature was deprecated in Vault and was removed in Vault 1.13.0. Although we have not decided a version for removal yet, the support for it in hvac will be removed at some point; likely at the same time we decide to drop support for older versions of Vault.

Once we have a decision and timeline for supported versions of Vault, a more specific announcement can be made.

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Thanks to @Tylerlhess for pointing out that our Vault integration matrix is quite a bit behind.

In this PR I'm attempting to expand it.

• use a wildcard for the patch version component
• adding 1.12.x-1.14x
• turns off fail-fast on lint, unit, and integration tests (we want to know if failures only exist in a certain combination)
• turn on colorized output for pytest in CI
• fixing breakages due to backports of changes into new minor versions
• skipping SSH tests for features removed in later Vault versions
• some minor coverage changes following on the heels of update coverage report locations, remove duplicate filenames #1024

I will also look at expanding the enterprise versions, since those are really old...
Using newer enterprise versions is a more complicated matter which I'll try to address in a different PR.

[codecov]

Codecov Report

Merging #1023 (5d3ba59) into main (ab541ac) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #1023   +/-   ##
=======================================
  Coverage   84.70%   84.70%           
=======================================
  Files          65       65           
  Lines        3066     3066           
=======================================
  Hits         2597     2597           
  Misses        469      469           

Impacted Files	Coverage Δ
hvac/api/secrets_engines/ssh.py	96.72% <ø> (ø)

[adammike]

Looks Great, Thanks!