slapos_cloud: Fix SupportRequest_recheckMonitoring

Wrong object used resulted with non working SupportRequest_recheckMonitoring
on Compute Node.
9 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

01:26:32

passed SlapOS.Eggs.UnitTest-Master.Python2

00:11:43

passed SlapOS.Eggs.UnitTest-Master.Python3

00:14:03

failed SlapOS-Master.UnitTest-Master

01:20:16

passed SlapOS.Eggs.UnitTest-Master.Python2

00:11:55

passed SlapOS.Eggs.UnitTest-Master.Python2

00:11:53

passed SlapOS.Eggs.UnitTest-Master.Python3

00:22:07

passed SlapOS.Eggs.UnitTest-Master.Python3

passed SlapOS.Eggs.UnitTest-Master.Python3

00:13:00