Merge pull request #1283 from pydctw/metadata-sync-bp-0.5

✨ Backport release-0.5: Wait for metadata cache to sync

Author: k8s-ci-robot

pkg/cache/internal/deleg_map.go

@@ -73,6 +73,7 @@ func (m *InformersMap) Start(stop <-chan struct{}) error {
 func (m *InformersMap) WaitForCacheSync(stop <-chan struct{}) bool {
 	syncedFuncs := append([]cache.InformerSynced(nil), m.structured.HasSyncedFuncs()...)
 	syncedFuncs = append(syncedFuncs, m.unstructured.HasSyncedFuncs()...)
+	syncedFuncs = append(syncedFuncs, m.metadata.HasSyncedFuncs()...)
 
 	if !m.structured.waitForStarted(stop) {
 		return false