avocado.core.output: Introduce 'partial' event to View.notify()

And replace the last usage of the .log_ui methods in the
app code.
Signed-off-by: NLucas Meneghel Rodrigues <lmr@redhat.com>

avocado/core/output.py

@@ -347,7 +347,8 @@ class View(object):
         mapping = {'message': self.log_ui_header,
                    'minor': self.log_ui_minor,
                    'error': self.log_ui_error,
-                   'warning': self.log_ui_warning}
+                   'warning': self.log_ui_warning,
+                   'partial': self.log_ui_partial}
         if msg is not None:
             mapping[event](msg)
 

avocado/job.py

@@ -220,7 +220,7 @@ class TestRunner(object):
                             if test_state['paused']:
                                 msg = test_state['paused_msg']
                                 if msg:
-                                    self.job.view.log_partial(msg)
+                                    self.job.view.notify(event='partial', msg=msg)
 
                 except Queue.Empty:
                     if p.is_alive():