Merge pull request #9021 from openshift-cherrypick-robot/cherry-pick-8908-to-enterprise-3.6

[enterprise-3.6] Sanitize openshift_master_cluster_hostname

Author: kalexand-rh

install_config/install/advanced_install.adoc

@@ -1450,7 +1450,7 @@ inventory file:
 
 ----
 openshift_master_cluster_method=native
-openshift_master_cluster_hostname=lb.openshift.com
+openshift_master_cluster_hostname=lb-internal.openshift.com
 openshift_master_cluster_public_hostname=custom.openshift.com
 ----
 
@@ -2217,7 +2217,7 @@ endif::[]
 # or to one or all of the masters defined in the inventory if no load
 # balancer is present.
 openshift_master_cluster_method=native
-openshift_master_cluster_hostname=openshift-cluster.example.com
+openshift_master_cluster_hostname=openshift-internal.example.com
 openshift_master_cluster_public_hostname=openshift-cluster.example.com
 
 # apply updated node defaults
@@ -2319,7 +2319,7 @@ openshift_deployment_type=openshift-enterprise
 # or to one or all of the masters defined in the inventory if no load
 # balancer is present.
 openshift_master_cluster_method=native
-openshift_master_cluster_hostname=openshift-cluster.example.com
+openshift_master_cluster_hostname=openshift-internal.example.com
 openshift_master_cluster_public_hostname=openshift-cluster.example.com
 
 # override the default controller lease ttl

install_config/install/stand_alone_registry.adoc

@@ -274,7 +274,7 @@ openshift_master_default_subdomain=apps.test.example.com
 # or to one or all of the masters defined in the inventory if no load
 # balancer is present.
 openshift_master_cluster_method=native
-openshift_master_cluster_hostname=openshift-cluster.example.com
+openshift_master_cluster_hostname=openshift-internal.example.com
 openshift_master_cluster_public_hostname=openshift-cluster.example.com
 
 # apply updated node defaults