Load notes in ChangeUpdate.storeCommentsInNotes()

ChangeUpdate assumes the NoteMap in ChangeNotes is already
loaded. However, the ChangeNotes were never loaded, so the NoteMap
will always be empty. Therefore, we loaded the ChangeNotes.

Change-Id: Ibebb0d8c75dcac57178438b633e18447ec3cdb2e
1 file changed