fix deployment

Author: williamlardier

tests/@setup/run-tests.sh

@@ -275,9 +275,9 @@ ${env_vars_yaml}
             memory: "4Gi"
             cpu: "2"
         volumeMounts:
-${volume_mounts_yaml:-""}
+${volume_mounts_yaml:-"        []"}
       volumes:
-${volumes_yaml:-""}
+${volumes_yaml:-"      []"}
 EOF
 
     if ! monitor_job_and_stream_logs "${job_name}" "${JOB_TIMEOUT}"; then