Fixes starting freezer-scheduler with --no-daemon

When using flag --no-daemon, freezer-scheduler --no-daemon start fails with
AttributeError: 'NoDaemon' object has no attribute 'restart'
(freezer_scheduler.py: L251). This patch adds missing dummy methods for reload
and restart actions.

Change-Id: I72a0a4f68503b7c143cbe6c6f13cfbdc08e6ccbb

freezer/scheduler/daemon.py

@@ -115,6 +115,12 @@ class NoDaemon(object):
     def status(self):
         pass
 
+    def restart(self):
+        pass
+
+    def reload(self):
+        pass
+
 
 class Daemon(object):
     """