Update Rugged to 1.0.X
This is part of gitlab-org/gitaly#2856 (closed), and bumps the version requirements of our gitlab-gollum-lib fork to use Rugged 1.0.x (via the gitlab-gollum-rugged_adapter dependency).
Main issue: gitlab-org/gitaly#2856 (closed)
The changes in this MR are also verified through these temporary MRs:
Edited by Markus Koller