Save filter option choice to BE for epics
Follow up of https://gitlab.com/gitlab-org/gitlab-ee/issues/7526 and https://gitlab.com/gitlab-org/gitlab-ce/issues/51482 to apply to all epic objects, instance-wide.
Edited by Pedro Moreira da Silva
Follow up of https://gitlab.com/gitlab-org/gitlab-ee/issues/7526 and https://gitlab.com/gitlab-org/gitlab-ce/issues/51482 to apply to all epic objects, instance-wide.