handle array values in helm command arguments

Unfortunately, helm can't handle arrays as argument values directly. A
special "index" syntax is needed. See issue
https://github.com/helm/helm/issues/1987 and solution for details.

import_api_app/helpers/delete_service.py

@@ -72,13 +72,18 @@ class DeleteService:
             set_values['deleteObject'] +
             ' / id=' + set_values['deleteId'] +
             ' / session=' + set_values['sessionId'])
-        job_args = [
-            '--' + set_values['deleteObject'] + '-filter',
-            set_values['deleteId'],
-            set_values['sessionId']
-        ]
+        # We need to handle the fact that we can't use an array as argument
+        # value when calling helm. For details see
+        # https://github.com/helm/helm/issues/1987#issuecomment-682352463.
+        job_args = {
+            'jobArgs[0]': '--' + set_values['deleteObject'] + '-filter',
+            'jobArgs[1]': set_values['deleteId'],
+        }
         if dryrun:
-            job_args.append('--dry-run')
+            job_args.update({'jobArgs[2]': '--dry-run', 
+            'jobArgs[3]': set_values['sessionId']})
+        else:
+            job_args.update({'jobArgs[2]': set_values['sessionId']})
         job_args = {'jobArgs': job_args}
         cp = self.helm.install(  # noqa: F841
             chart=os.path.join(self.root_path, "charts", 'dd-marker-prod'),