Fix files after pep8 check

Related-Prod: PROD-36999

Change-Id: Ie6d952aa97545873089478339080931720569dba
diff --git a/tcp_tests/tests/system/test_offline.py b/tcp_tests/tests/system/test_offline.py
index 34c729a..0b0d6a5 100644
--- a/tcp_tests/tests/system/test_offline.py
+++ b/tcp_tests/tests/system/test_offline.py
@@ -73,9 +73,12 @@
                 end=admin_net[253],
                 net=admin_net))
         underlay.check_call(node_name=cfg_node, verbose=verbose,
-            cmd="maas mirantis vlan update "
-            "$(maas mirantis subnets read | jq '.[] | select(.name==\"{net}\") | .vlan.fabric_id') "  # noqa
-            "0 dhcp_on=True primary_rack='cfg01'".format(net=admin_net))
+                            cmd="maas mirantis vlan update "
+                                "$(maas mirantis subnets read | jq '.[] | "
+                                "select(.name==\"{net}\") | .vlan.fabric_id') "  # noqa
+                                "0 dhcp_on=True "
+                                "primary_rack='cfg01'".format(
+                                    net=admin_net))
 
         underlay.check_call(
             node_name=cfg_node, verbose=verbose,