Fix: draft-published event is not visible

The draft-published event was not visible to users other than
the owner and reviewers, because when the event was fired it
was being given patchset and change objects that were still
in draft state.

Change it to take the updated patchset and change objects.

Bug: Issue 1621

Change-Id: I0dbdc5ff7804450d8b5c8a424a8cb1b0059b4029
1 file changed