Document testing repos for dev purposes

Signed-off-by: Bogdan Dobrelya <bdobreli@redhat.com>

playbooks/openstack/README.md

@@ -183,9 +183,14 @@ Then run the provision + install playbook -- this will create the OpenStack
 resources:
 
 ```bash
-$ ansible-playbook --user openshift -i inventory openshift-ansible/playbooks/openstack/openshift-cluster/provision_install.yaml
+$ ansible-playbook --user openshift -i inventory \
+  openshift-ansible/playbooks/openstack/openshift-cluster/provision_install.yaml \
+  -e openshift_repos_enable_testing=true
 ```
 
+Note, you may want to use the testing repo for development purposes only.
+Normally, `openshift_repos_enable_testing` should not be specified.
+
 If you're using multiple inventories, make sure you pass the path to
 the right one to `-i`.
 

playbooks/openstack/sample-inventory/group_vars/OSEv3.yml

@@ -1,6 +1,7 @@
 ---
+## Openshift product versions and repos to install from
 openshift_deployment_type: origin
-openshift_repos_enable_testing: true
+#openshift_repos_enable_testing: true
 #openshift_deployment_type: openshift-enterprise
 #openshift_release: v3.5
 openshift_master_default_subdomain: "apps.{{ openshift_openstack_clusterid }}.{{ openshift_openstack_public_dns_domain }}"