* openssh_keypair: bugfix make regenerating keypairs via force possible / add invalid file handling
* openssh_keypair: change permissions of read-only file instead of deleting it for regeneration; add changelog fragment
* address review feedbak, refactor
* add integration tests for bigfixes
* linter: fix indent
* fixup integration tests: use force when regenerating an invalid file
* linter: fix indent
* openssh_keypair: address review feedback
* openssh_keypair: fixup, remove backtick
* openssh_keypair: address review feedback
* Only pass 'y' into stdin of ssh-keygen when file exists.
The extant documentation says that the fingerprint return value is a
single string, but it is currently being returned as a split list.
Convert the returned value to a string as documented, and add some
basic test-case coverage for the return values.
- The openssh_keypair module will return a public key output on the
private key creation.
- Add integration test in order to verify the public key output.
