Check that all load and uc pods get deleted

Check that all the pods for load generators and uc gets deleted.
Otherwise they interfere with kafka and create topics again.

execution/run_uc.py

@@ -134,7 +134,8 @@ def start_workload_generator(wg_yaml, dim_value, uc_id):
         num_nested_groups = dim_value
         num_sensors = 4
         approx_num_sensors = num_sensors ** num_nested_groups
-        wl_instances = (approx_num_sensors + wl_max_records - 1) // wl_max_records
+        wl_instances = (approx_num_sensors +
+                        wl_max_records - 1) // wl_max_records
 
     # Customize workload generator creations
     wg_yaml['spec']['replicas'] = wl_instances
@@ -341,6 +342,24 @@ def stop_applications(wg, app_svc, app_svc_monitor, app_jmx, app_deploy):
 
     print('Delete uc application')
     delete_resource(app_deploy, appsApi.delete_namespaced_deployment)
+
+    print('Check all pods deleted.')
+    while True:
+        # Wait bit for deletion
+        time.sleep(2)
+
+        # Count how many pod still need to be deleted
+        no_load = len(coreApi.list_namespaced_pod(
+            namespace, label_selector='app=titan-ccp-load-generator').items)
+        no_uc = len(coreApi.list_namespaced_pod(
+            namespace, label_selector='app=titan-ccp-aggregation').items)
+
+        # Check if all pods deleted
+        if no_load <= 0 and no_uc <= 0:
+            print('All pods deleted.')
+            break
+
+        print(f'#{no_load} load generator and #{no_uc} uc pods needs to be deleted')
     return