Change back ceph version to luminous

Change-Id: I9013bf1b7dd4689e06d2b90c1b0a312ea1b937d5
Related-Prod:#PROD-00000
diff --git a/tcp_tests/templates/heat-cicd-queens-dvr-sl/salt-context-cookiecutter.yaml b/tcp_tests/templates/heat-cicd-queens-dvr-sl/salt-context-cookiecutter.yaml
index 5fbbf7d..1bdfd65 100644
--- a/tcp_tests/templates/heat-cicd-queens-dvr-sl/salt-context-cookiecutter.yaml
+++ b/tcp_tests/templates/heat-cicd-queens-dvr-sl/salt-context-cookiecutter.yaml
@@ -70,7 +70,7 @@
   ceph_rgw_node02_hostname: rgw02
   ceph_rgw_node03_address: 10.167.4.78
   ceph_rgw_node03_hostname: rgw03
-  ceph_version: "nautilus"
+  ceph_version: "luminous"
   ceph_osd_block_partition_prefix: ''
   cicd_control_node01_address: 10.167.4.91
   cicd_control_node01_hostname: cid01