Add a formal cleanup phase to the scheduler flow.
-add a --cleanup or -C option to autoserv, which runs a new control segment, cleanup.  this option and control segment obsolete the old -b option and reboot_segment control segment.
-change the RebootTask in the scheduler into a more generic CleanupTask, which calls autoserv --cleanup.
-change the host status "Rebooting" to "Cleaning"



git-svn-id: http://test.kernel.org/svn/autotest/trunk@2377 592f7852-d20e-0410-864c-8624ca9c26a4
diff --git a/frontend/afe/models.py b/frontend/afe/models.py
index 1f0e90d..daede90 100644
--- a/frontend/afe/models.py
+++ b/frontend/afe/models.py
@@ -136,7 +136,7 @@
     dirty: true if the host has been used without being rebooted
     """
     Status = enum.Enum('Verifying', 'Running', 'Ready', 'Repairing',
-                       'Repair Failed', 'Dead', 'Rebooting', 'Pending',
+                       'Repair Failed', 'Dead', 'Cleaning', 'Pending',
                         string_values=True)
 
     hostname = dbmodels.CharField(maxlength=255, unique=True)