Add `glab_ask_git_command` to self hosted unit primitives

What does this MR do and why?

This MR adds glab_ask_git_command to self hosted unit primitives.

Also bumps the gem version as we require a new release for this change to take effect

Related to gitlab-org/gitlab#524913 (closed)

References

Please include cross links to any resources that are relevant to this MR. This will give reviewers and future readers helpful context to give an efficient review of the changes introduced.

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.