Grafana login should not require local PostgreSQL
- Single Sign on to Grafana would fail if authorization was being performed by GitLab and the PostgreSQL server was on a different node. Removed the check. If we are using GitLab authorization/authentication then a database is implied to exist and that is true whether the PostgreSQL instance is local or remote.
Closes #4880 (closed)
Signed-off-by: Robert Marshall rmarshall@gitlab.com