Add support for setting routingConfig:subdomain

inventory/byo/hosts.example

@@ -54,6 +54,9 @@ deployment_type=enterprise
 #openshift_master_cluster_public_hostname=openshift-ansible.test.example.com
 #openshift_master_cluster_defer_ha=True
 
+# default subdomain to use for exposed routes
+#osm_default_subdomain=apps.test.example.com
+
 # host group for masters
 [masters]
 ose3-master[1:3]-ansible.test.example.com

roles/openshift_master/tasks/main.yml

@@ -53,6 +53,7 @@
       oauth_grant_method: "{{ openshift_master_oauth_grant_method | default(None) }}"
       sdn_cluster_network_cidr: "{{ osm_cluster_network_cidr | default(None) }}"
       sdn_host_subnet_length: "{{ osm_host_subnet_length | default(None) }}"
+      default_subdomain: "{{ osm_default_subdomain | default(None) }}"
 
 # TODO: These values need to be configurable
 - name: Set dns OpenShift facts

roles/openshift_master/templates/master.yaml.v1.j2

@@ -101,7 +101,7 @@ projectConfig:
     mcsLabelsPerProject: 5
     uidAllocatorRange: 1000000000-1999999999/10000
 routingConfig:
-  subdomain: router.default.local
+  subdomain:  "{{ openshift.master.default_subdomain | default("") }}"
 serviceAccountConfig:
   managedNames:
   - default