Remove use of DSA keys due to openssh deprecation

[jeff350]

Description

This is addressing issue #426 where openssh has started to disable dsa key support at compile time leading to errors in kitchen-docker stating unknown key type dsa

Issues Resolved

#426

Type of Change

Our release process assumes you are using Conventional Commit messages.

The most important prefixes you should have in mind are:

• _fix_: which represents bug fixes, and correlates to a SemVer patch.
• _feat_: which represents a new feature, and correlates to a SemVer minor.
• _feat!_:, or fix!:, refactor!:, etc., which represent a breaking change (indicated by the !) and will result in a major version change.

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Check List

• [ ] New functionality includes tests
• [ ] All tests pass
• [ ] Commit message includes a Conventional Commit Message

[jeff350]

@damacus could you please review this when you have time.

[RulerOf]

@jeff350 make sure you change your commit message, something like fix: Remove use of DSA keys due to openssh deprecation, and add a sign-off at the bottom—see the other commit messages in the repo for examples.

[jeff350]

@RulerOf Thanks for taking the time to review. I have modified the commit message as you suggested.

Please let me know if there is anything I can do to help get this merged in.

[damacus]

Blocked on #418