Fix post-receive feature flag not working in gitaly-ruby
Even though the feature flag to use the Go implementation of the
post-receive hook is on by default, gitaly-ruby was still using the Ruby
version. This was happening because gitaly-ruby did not activate the
feature flag because the go-postreceive-hook
flag didn't start with
the prefix gitaly-feature-ruby-
. We now allow all feature flags that
end with -hook
values to be used within gitaly-ruby.
Relates to gitlab#258833 (closed)