[CORD-2127]
Change to use headnode_dns for the DNS name of the headnode

[CORD-2120]
Add onos-fabric DNS entry

Change-Id: I2c9b3c9e64fea9366b437621eb56d0ef79aa2c98
diff --git a/roles/xos-config-new-tosca/defaults/main.yml b/roles/xos-config-new-tosca/defaults/main.yml
index 1ead356..c0f3674 100644
--- a/roles/xos-config-new-tosca/defaults/main.yml
+++ b/roles/xos-config-new-tosca/defaults/main.yml
@@ -1,5 +1,4 @@
 ---
-
 # Copyright 2017-present Open Networking Foundation
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -14,9 +13,10 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-
 # xos-config/defaults/main.yml
 
+xos_tosca_host: "xos-tosca"
+
 head_credentials_dir: "/opt/credentials"
 
 xos_admin_user: "xosadmin@opencord.org"