Update Gitlab tests to support upgrade job

Opening based on https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/jobs/6326401

Tests currently do not support running 2x (on the upgrade) due to the way they were designed.

Specific Failures:

• Time out waiting to approve user - the user was already approved on the clean install
• Failure to create new project - the project was already created on the clean install

The may necessitate some conditional logic which can be tricky in Cypress. Feel free to ping me @micah.nagel if you need assistance, and/or review the mattermost test which makes use of conditionals.