Pass through TOP_UPSTREAM_SOURCE_REF for qa pipeline
What does this MR do?
Pass through CI_COMMIT_SHA_REF as TOP_UPSTREAM_SOURCE_REF variable to downstream omnibus-gitlab-mirror and gitlab-qa pipelines.
This variable is required for gitlab-qa to determine the upstream ref of triggered pipelines.
https://gitlab.com/gitlab-org/quality/team-tasks/issues/298
Conformity
Edited by Albert Salim