CORD-761 generate core API cert and copy to head node

Change-Id: I80533f099cf370f555058416b80d599d02a2c953
diff --git a/vars/cord.yml b/vars/cord.yml
index c1d8798..50ed1bc 100644
--- a/vars/cord.yml
+++ b/vars/cord.yml
@@ -30,6 +30,10 @@
     altnames:
       - "DNS:keystone.{{ site_suffix }}"
       - "DNS:{{ site_suffix }}"
+  - cn: "xos-core.{{ site_suffix }}"
+    subj: "/C=US/ST=California/L=Menlo Park/O=ON.Lab/OU=Test Deployment/CN=xos-core.{{ site_suffix }}"
+    altnames:
+      - "DNS:xos-core.{{ site_suffix }}"
 
 # resolv.conf settings
 dns_search: