Fix race in local node creation

It was possible for the metastore Open call to return before it actually
created it's local node.

meta/store.go

@@ -256,6 +256,7 @@ func (s *Store) Open() error {
 
 	// Wait for a leader to be elected so we know the raft log is loaded
 	// and up to date
+	<-s.ready
 	return s.WaitForLeader(0)
 }