-change hosts file - will maintain hosts file on multipe machines.

for the scope of this type of demo network, this is much simpler
than installing and managing dns.

roles/domainname/tasks/main.yaml

@@ -0,0 +1,12 @@
+---
+- lineinfile:
+        path: /etc/dhcpcd.conf
+        regexp: "{{ item.regexp }}"
+        line: "{{ item.line }}"
+  with_items:
+          - { regexp: '^static\ domain_name=', line: 'static domain_name=demo.dsfinancial.com' }
+          - { regexp: '^static\ domain_search=', line: 'static domain_search=demo.dsfinancial.com' }
+  become: true
+  tags: update_domainname
+
+