-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/common/tasks/main.yaml

@@ -16,3 +16,10 @@
           - /home/pi/Documents/smb
           - /home/pi/scripts
   tags: create_dirs
+- name: update hosts file
+  become: true
+  blockinfile:
+          dest: /etc/hosts
+          content: "{{ lookup('template', '{{ role_path }}/templates/hosts.j2') }}"
+          state: present
+  tags: update_hosts

roles/common/templates/hosts.j2

@@ -0,0 +1,7 @@
+{% for item in ansible_play_batch %}
+{{ hostvars[item].ansible_host }}	{{ item }}.demo.dsfinancial.com
+{% endfor %}
+
+{% for item in ansible_play_batch %}
+{{ hostvars[item].ansible_host }}	{{ item }}
+{% endfor %}