Don't reprocess v2 tokens in GitalyRemoteRepository
Addresses https://gitlab.com/gitlab-org/gitaly/issues/1305#note_112031370 so that we don't mess with tokens for remote repositories that are already v2 auth tokens.
Edited by Alejandro Rodríguez
Addresses https://gitlab.com/gitlab-org/gitaly/issues/1305#note_112031370 so that we don't mess with tokens for remote repositories that are already v2 auth tokens.