Using enum for std_cal wf name

apps/cli/executables/pexable/ws_annihilator/ws_annihilator/annihilator.py

@@ -547,7 +547,7 @@ class ImageAnnihilator(WorkflowAnnihilator):
             JOIN capability_executions ce ON ce.current_workflow_request_id = wr.workflow_request_id
             JOIN capability_requests cr ON cr.capability_request_id = ce.capability_request_id
             JOIN capability_versions cv ON cv.capability_request_id = ce.capability_request_id
-        WHERE cr.capability_name = 'std_calibration'
+        WHERE cr.capability_name = %(cal_wf_name)s
             AND cr.state = 'Complete'
             AND wr.cleaned = false
             AND cr.updated_at < %(time_to_keep)s
@@ -569,6 +569,7 @@ class ImageAnnihilator(WorkflowAnnihilator):
 
         params = {
             "wf_name": self._workflow,
+            "cal_wf_name": TypedAnnihilators.CAL.value,
             "time_to_keep": (datetime.datetime.now() - relativedelta(days=int(self.get_days_to_keep("image"))))
             .strftime('%Y-%m-%d %H:%M:%S'),
         }