Add host param to gitlab-monitor config
- Use host param to connect to the database.
- Update spec to test for host param.
- Rename spec file to better match naming convention.
Fix for https://gitlab.com/gitlab-org/gitlab-monitor/issues/15
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fix for https://gitlab.com/gitlab-org/gitlab-monitor/issues/15