Do not mask gitlab.com specific unittest template

Mistake in .gitlab-ci.yml caused the specific recipe for gitlab.com to be masked by the general one in .common-ci.yml. In turn, this caused the intel license not to be set correctly. This was not a problem before because the license in the Docker container was still valid. As it expired just now, this fix is necessary. Passes CI at JET https://git.ccfe.ac.uk/kplass/QuaLiKiz/pipelines/73255 (naturally) .