CE port of "Add date fields to Epic to enable dates to source from milestones"
The CE port of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6448
Add missing Milestones::UpdateService spec
Edited by Mark Chao
The CE port of https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/6448
Add missing Milestones::UpdateService spec