Adding tacacs+ container for testing

tools/docker-compose/ansible/roles/sources/templates/docker-compose.yml.j2

@@ -174,6 +174,14 @@ services:
       - prometheus
     depends_on:
       - prometheus
+{% endif %}
+{% if enable_tacacs|bool %}
+  tacacs:
+    image: dchidell/docker-tacacs
+    container_name: tools_tacacs_1
+    hostname: tacacs
+    ports:
+      - "49:49"
 {% endif %}
   # A useful container that simply passes through log messages to the console
   # helpful for testing awx/tower logging