anchor.diff:  
   ----
   cd dns-service-heat
  -sh bin/full_service.sh \
  +sh bin/deploy_dns_service.sh \
     -z ocp3.example.com \
     -S env_server_rhel.yaml \
     -R rhn_credentials.yaml \
  
positive.code: 
  * python2
  * python-openstackclient
  * python2-dns
  * python-jinja2
  * jq
  
  
negative.code:   -K ~/ocp3_rsa
  ----
  
  The script takes three distinct actions:
  
  1. Create a heat stack with network connectivity and instances created
  and named to specification
  1. Query the instances for hostname and IP address and create an inventory for Ansible
  1. Apply an Ansible playbook to the instances to configure the DNS service
  
  
  