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

5 jobs for !23 with topic/default/regenerate_gitlab_ci in 5 minutes and 5 seconds (queued for 2 seconds)
latest merge request
Name Stage Failure
failed
py27 Tests
E                                          ^
E SyntaxError: invalid syntax
!!!!!!!!!!!!!!!!!!! Interrupted: 3 errors during collection !!!!!!!!!!!!!!!!!!!!
=========================== 3 error in 1.48 seconds ============================
ERROR: InvocationError for command /builds/cubicweb/cubes/seda/.tox/py27/bin/python -m pytest test (exited with code 2)
___________________________________ summary ____________________________________
ERROR: py27: commands failed
Cleaning up file based variables
ERROR: Job failed: command terminated with exit code 1
failed
py3 Tests
Uploading artifacts for failed job
Uploading artifacts...
py3-deprecated-warnings.json: found 1 matching files and directories

Uploading artifacts as "archive" to coordinator... ok
id=349697 responseStatus=201 Created token=xnx-W44B
Uploading artifacts...
report.xml: found 1 matching files and directories

Uploading artifacts as "junit" to coordinator... ok
id=349697 responseStatus=201 Created token=xnx-W44B
Cleaning up file based variables
ERROR: Job failed: command terminated with exit code 1