tripleo_profile_tasks: add a final line break

If a trace occurs, a final line break is visually useful to know when
the task profiling ends. The trace will be show *after* the callback so
we reduce confusion where the problem is.

Change-Id: Ibe21bdf046f71ce45f0fd36068635c4d954da5f2

tripleo_ansible/ansible_plugins/callback/tripleo_profile_tasks.py

@@ -117,3 +117,5 @@ class CallbackModule(PT):
                 u'{0:.02f}s'.format(result['time'])
             ]
             self._output(' | '.join(line))
+
+        self._output('~' * 89)