Bump gitlab-qa to 10.4.0
What does this MR do?
Bumps gitlab-qa version to 10.4.0
See Bump version to 10.4.0 (gitlab-org/gitlab-qa!1171 - merged)
Check-list
Edited by John McDonnell
Bumps gitlab-qa version to 10.4.0
See Bump version to 10.4.0 (gitlab-org/gitlab-qa!1171 - merged)