Added clean stage in gitlab YAML

6 jobs for feature-remove-old-numeric in 2 minutes and 3 seconds (queued for 1 second)
Status Job ID Name Coverage
  Ci
canceled #11752
osx-10.13 sci
ci:osx

00:02:02

canceled #11751
ubuntu sci docker
ci:ubuntu_bionic

00:02:02

canceled #11749
ubuntu sci docker
ci:ubuntu_trusty

00:02:02

canceled #11750
ubuntu sci docker
ci:ubuntu_xenial

00:02:02

canceled #11753
windows-10 sci
ci:windows

00:02:03

 
  Clean
canceled #11754
ubuntu sci docker
clean_docker