Signed-off-by: Rémy Coutable <remy@rymai.me>

We have run into permission issues with MySQL triggers in #36633 that
would have been caught earlier either if our migration tests or GitLab QA
tests had been testing against non-superuser users. This change creates
a non-superuser that has access to the GitLab test database and uses that.

Closes #39932

Instead, install them only for the 'update-knapsack' job.

Signed-off-by: Rémy Coutable <remy@rymai.me>

This reverts merge request !12753

Closes #30876

Signed-off-by: Rémy Coutable <remy@rymai.me>

Signed-off-by: Rémy Coutable <remy@rymai.me>

reduce variables definitions. Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10156#note_26811996

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10156#note_26812377

Otherwise oddly some native gems could not be found
under some circumstance. No idea why, hours wasted.

Kamil Trzcińśki authored 8 years ago and Zeger-Jan van de Weg committed 8 years ago

It allows us to remove redundant steps of installing required dependencies for every build.

This reverts commit 13e37a3e.

Since introduction of gitignore the vendor folder contains also gitignores which affects detection when to update a cache.
We explicitly cache only apt and ruby folders.