Gitaly SSH Client

See merge request !139

Revert "Merge branch 'sh-disable-rubygems' into 'master'"

See merge request !143

This reverts commit a18c9012, reversing
changes made to 0a646241.

Disable RubyGems to increase performance

See merge request !141

By default, RubyGems is enabled, which causes the Ruby interpreter
to load 600+ additional files at startup when gitlab-shell is
designed not to use any external gems.

- Wire up gitaly-*-pack to Gitaly. Don't pass git-*-pack to go
- Disable tests for go1.5 & 1.6

Revert gl-repository changes

Closes gitlab-ee#2822

See merge request !142

Revert "Merge branch '86-follow-up-from-use-gl_repository-if-present-when-enqueing-sidekiq-postreceive-jobs' into 'master'"

This reverts commit fa634351, reversing
changes made to 62af7f6a.

Add list-key-ids command

See merge request !140

Add code quality job to gitlab-ci.yml

See merge request !138

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Remove empty file

See merge request !137

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>