Parameterized linux_system_codename

Change-Id: Ic527bfa74b4caf7e0bb5d157bfae024f2cf53111
diff --git a/reclass/storage/system/cicd_manager_cluster.yml b/reclass/storage/system/cicd_manager_cluster.yml
index 898e657..032f257 100644
--- a/reclass/storage/system/cicd_manager_cluster.yml
+++ b/reclass/storage/system/cicd_manager_cluster.yml
@@ -2,6 +2,7 @@
   _param:
     cicd_control_node02_hostname: cid01
     cicd_control_node03_hostname: cid02
+    cicd_control_system_codename: xenial
   reclass:
     storage:
       node:
@@ -12,7 +13,7 @@
           - cluster.${_param:cluster_name}.cicd.control.manager
           params:
             salt_master_host: ${_param:reclass_config_master}
-            linux_system_codename: xenial
+            linux_system_codename: ${_param:cicd_control_system_codename}
             single_address: ${_param:cicd_control_node02_address}
             keepalived_vip_priority: 102
             cicd_database_id: 2
@@ -23,7 +24,7 @@
           - cluster.${_param:cluster_name}.cicd.control.manager
           params:
             salt_master_host: ${_param:reclass_config_master}
-            linux_system_codename: xenial
+            linux_system_codename: ${_param:cicd_control_system_codename}
             single_address: ${_param:cicd_control_node03_address}
             keepalived_vip_priority: 101
             cicd_database_id: 3