Fix typo in conftest.py

Change-Id: I5e7d7a5a282e402cc2e36034a9f6653a85ac4be9
diff --git a/tcp_tests/tests/system/conftest.py b/tcp_tests/tests/system/conftest.py
index 754e0d7..080cb4d 100644
--- a/tcp_tests/tests/system/conftest.py
+++ b/tcp_tests/tests/system/conftest.py
@@ -54,8 +54,8 @@
     'oss_deployed',
     'oss_sl_os_deployed',
     # drivetrain_fixtures
-    'drivetrain_actions'
-    'drivetrain_deployed'
+    'drivetrain_actions',
+    'drivetrain_deployed',
     # decapod_fixtures
     'decapod_actions',
     'decapod_deployed',