Remove rugged call in blame controller
Remove rugged call in blame controller

Fetching commits through #lookup uses rugged, and this is phased out.

Also adds a short circuit in the `feature_enabled?` Gitaly method to
allow Gitaly to be used when objects are set up with `let` before an
example is run.

stoplightio/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,iiet/iiet-git,iiet/iiet-git,stoplightio/gitlabhq,mmkassem/gitlabhq,iiet/iiet-git,jirutka/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,stoplightio/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab