one: add scheduled jobs

one/jobs/hourly/scheduled_vm_cleanup.py

+from django_extensions.management.jobs import HourlyJob
+
+class Job(HourlyJob):
+    help = "Suspend/delete expired Instances."
+
+    def execute(self):
+        # executing empty sample job TODO
+        pass

one/jobs/hourly/update.py

+from one.models import *
+from django_extensions.management.jobs import HourlyJob
+
+class Job(HourlyJob):
+    help = "Update Disks and Networks from OpenNebula."
+
+    def execute(self):
+        Disk.update()
+        Network.update()
+        pass