ROSA route sharding for customdomain

Author: mletalie

modules/osd-applications-config-custom-domains.adoc

@@ -49,10 +49,18 @@ spec:
   certificate:
     name: <name>-tls <3>
     namespace: <my_project>
+  routeSelector: <4>
+    matchLabels:
+     route: acme
+  namespaceSelector: <5>
+    matchLabels:
+     type: sharded
 ----
 <1> The custom domain.
 <2> The type of load balancer for your custom domain. This type can be the default `classic` or `NLB` if you use a network load balancer.
 <3> The secret created in the previous step.
+<4> Optional: Filters the set of Routes serviced by the CustomDomain ingress. If no value is provided, the default is no filtering.
+<5> Optional: Filters the set of Namespaces serviced by the CustomDomain ingress. If no value is provided, the default is no filtering.
 
 . Apply the CR:
 +