Update Gitaly Configuration after deprecation of git_data_dirs
Depending on the proposed solution from Deprecate git_data_dirs in Omnibus for Gitaly f... (gitaly#5133 - closed) we'll need to update the omnibus configs for git_data_dirs
and instead use gitaly[:configuration][:storage]
in the Gitaly configs throughout gitlab-qa in advance of %17.0
Edited by John McDonnell