Move `lib/ci` to `lib/gitlab/ci`
Since there are only two hard things in programming I think that we should fight second one, and move lib/ci
to lib/gitlab/ci
. In this namespace class Ci::GitlabCiYamlProcessor
will receive better name Gitlab::Ci::YamlProcessor
, so other classes within Gitlab::Ci
module will.
\cc @ayufan