Allow users to disable the origin repo creation

inventory/byo/hosts.origin.example

@@ -634,6 +634,10 @@ openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true',
 # Enable API service auditing, available as of 1.3
 #openshift_master_audit_config={"basicAuditEnabled": true}
 
+# Enable origin repos that point at Centos PAAS SIG, defaults to true, only used
+# by deployment_type=origin
+#openshift_enable_origin_repo=false
+
 # host group for masters
 [masters]
 ose3-master[1:3]-ansible.test.example.com

roles/openshift_repos/tasks/main.yaml

@@ -37,6 +37,7 @@
   when: ansible_os_family == "RedHat" and ansible_distribution != "Fedora"
         and openshift_deployment_type == 'origin'
         and not openshift.common.is_containerized | bool
+        and openshift_enable_origin_repo | default(true)
 
 - name: Configure origin yum repositories RHEL/CentOS
   copy:
@@ -46,3 +47,4 @@
   when: ansible_os_family == "RedHat" and ansible_distribution != "Fedora"
         and openshift_deployment_type == 'origin'
         and not openshift.common.is_containerized | bool
+        and openshift_enable_origin_repo | default(true)