GitLab no permissions improvement

[brianmoose]

Currently with GitLab, if the user creating a MR hasn't granted the correct permissions on their branch, civet can't fill out certain database information it needs to initiate testing. This means that no GitLab CI is initiated and the merge button is green and ready to go. We do post a comment on the MR when this happens but it would probably also be a good idea to set a dummy CI status that gets reflected in the merge button.