fixes #2866 - Changing a hostgroup name doesn't update associated Smart Variable matchers
(cherry picked from commit 709ad8d6f425e0817d3faef2cc629af1458cb1c9)
fixes #2866 - Changing a hostgroup name doesn't update associated Smart Variable matchers
(cherry picked from commit 709ad8d6f425e0817d3faef2cc629af1458cb1c9)