Fix ceph keyring render failed

Change-Id: I3e2abc12f1160662face7416b42ade7876e23071
diff --git a/tcp_tests/tests/system/test_deploy_250_computes.py b/tcp_tests/tests/system/test_deploy_250_computes.py
index 8c4f386..1237dd5 100644
--- a/tcp_tests/tests/system/test_deploy_250_computes.py
+++ b/tcp_tests/tests/system/test_deploy_250_computes.py
@@ -229,7 +229,7 @@
                 "set -ex; "
                 "salt 'vcmp{}.*' state.sls "
                 "-l quiet --state-verbose=false "
-                "linux,ntp,openssh,salt,nova".format(
+                "linux,ntp,openssh,salt,nova,ceph.common".format(
                     str_vcmp)),
             'retry': {
                 'count': 3,