Allow epic_color_highlight flag to be applied to groups

EE: true
Changelog: fixed
Signed-off-by: Andrew Smith <espadav8@gmail.com>

ee/app/controllers/groups/epics_controller.rb

@@ -19,7 +19,7 @@ class Groups::EpicsController < Groups::ApplicationController
   before_action do
     push_frontend_feature_flag(:confidential_notes, @group, type: :development)
     push_frontend_feature_flag(:realtime_labels, group)
-    push_frontend_feature_flag(:epic_color_highlight)
+    push_frontend_feature_flag(:epic_color_highlight, @group)
   end
 
   feature_category :portfolio_management

ee/app/controllers/groups/roadmap_controller.rb

@@ -13,7 +13,7 @@ class RoadmapController < Groups::ApplicationController
 
     # show roadmap for a group
     def show
-      push_frontend_feature_flag(:epic_color_highlight)
+      push_frontend_feature_flag(:epic_color_highlight, @group)
 
       # Used to persist the order and show the correct sorting dropdown on UI.
       @sort = set_sort_order