Add v2 to reserved top level routes [EE]
What does this MR do?
Adds v2 to top level reserved routes
What are the relevant issue numbers?
EE version of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/26540
Adds v2 to top level reserved routes
EE version of https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/26540