Move Docker-QA image on the omnibus pipeline to an earlier stage
Because we trigger deploys as soon as the ubuntu package is available QA smoke tests are failing because of:
Unable to find image 'dev.gitlab.org:5005/gitlab/omnibus-gitlab/gitlab-ee-qa:11.6.0-rc3-ee' locally
Pulling repository dev.gitlab.org:5005/gitlab/omnibus-gitlab/gitlab-ee-qa
docker: Error: image gitlab/omnibus-gitlab/gitlab-ee-qa:11.6.0-rc3-ee not found.
I think what we may want to do is move this Docker-QA stage up a bit earlier in the pipeline.
cc @balasankarc in case this is not a good idea.