added conditional templating for NAT-check

roles/nhc/tasks/main.yml

@@ -60,3 +60,14 @@
   become: true
   become_user: root
 
+#test NAT is working by pinging license server hpclic0 which is in HPC_Ancillary_zone
+- set_fact:
+    EXTERNAL_IP_ADDRESS: "118.138.246.208" 
+  when: EXTERNAL_IP_ADDRESS is undefined
+
+- name: install nhc NAT check
+  template: dest="{{ nhc_dir }}/etc/nhc/scripts/check_nat.nhc" src=check_nat.nhc.j2
+  become: true
+  become_user: root
+  when: ADD_NHC_NAT_CHECK is defined
+