Added ancestor milestones to roadmaps

ee/app/assets/javascripts/roadmap/queries/groupMilestones.query.graphql

@@ -3,11 +3,12 @@ query groupMilestonesEE(
   $state: MilestoneStateEnum
   $timeframe: Timeframe
   $includeDescendants: Boolean
+  $includeAncestors: Boolean
 ) {
   group(fullPath: $fullPath) {
     id
     name
-    milestones(state: $state, includeDescendants: $includeDescendants, timeframe: $timeframe) {
+    milestones(state: $state, includeDescendants: $includeDescendants, includeAncestors: $includeAncestors, timeframe: $timeframe) {
       edges {
         node {
           id

ee/app/assets/javascripts/roadmap/store/actions.js

@@ -233,6 +233,7 @@ export const fetchGroupMilestones = (
       timeframe: defaultTimeframe || timeframe,
     }),
     includeDescendants: true,
+    includeAncestors: true,
     ...filterParams,
   };
 

ee/spec/frontend/roadmap/store/actions_spec.js

@@ -500,6 +500,7 @@ describe('Roadmap Vuex Actions', () => {
           end: '2018-12-31',
         },
         includeDescendants: true,
+        includeAncestors: true,
       };
     });