Fix files after pep8 check

Related-Prod: PROD-36999

Change-Id: Ie6d952aa97545873089478339080931720569dba
diff --git a/tcp_tests/managers/openstack_manager.py b/tcp_tests/managers/openstack_manager.py
index b0232ca..07810ba 100644
--- a/tcp_tests/managers/openstack_manager.py
+++ b/tcp_tests/managers/openstack_manager.py
@@ -138,8 +138,8 @@
                    "-e SOURCE_FILE=keystonercv3  "
                    "-v /root/:/home/rally "
                    "-v /var/log/:/home/rally/rally_reports/ "
-                   "-v /etc/ssl/certs/:/etc/ssl/certs/ {2} >> image.output"
-                   .format(conf_name, pattern, registry))
+                   "-v /etc/ssl/certs/:/etc/ssl/certs/ {1} >> image.output"
+                   .format(conf_name, registry))
         LOG.info("Running tempest testing on node {0} using the following "
                  "command:\n{1}".format(target_name, cmd))