ci(gitlab-ci): use templates from a common repository

4 jobs for !16 with topic/default/regenerate_gitlab_ci in 3 minutes and 19 seconds (queued for 2 minutes and 33 seconds)
latest detached
Status Job ID Name Coverage
  Lint
passed flake8 #349730

00:00:27

passed yamllint #349731

00:00:29

 
  Tests
passed py27 #349732

00:01:08

passed py3 #349733

00:01:14