gitlab-ci: run automatic pipeline on gitlab-ci integration

Usually we do not run an automatic pipeline for integration branches, since we have switched to multi-project pipelines for these, i.e. the pipeline is externally triggered. For the deployment of changes in the gitlab-ci repo, however, we cannot use multi-project pipelines, because we're creating and merging a merge request in a single script, i.e. we cannot use a trigger job in between. Thus we exclude gitlab-ci integrations from the exclusion here, so that an automatic pipeline is created again for these branches.

Moving the permission for externally triggered pipelines to the top of the rules in this context, so that these pipelines are always run.