OSDOCS-10559: adds assembly for router docs MicroShift

Author: ShaunaDiaz

_topic_maps/_topic_map_ms.yml

@@ -406,6 +406,8 @@ Topics:
   File: microshift-cni
 - Name: Using networking settings
   File: microshift-networking-settings
+- Name: Configuring the router
+  File: microshift-nw-router
 - Name: Network policies
   Dir: microshift_network_policy
   Topics:

microshift_networking/microshift-nw-router.adoc

@@ -0,0 +1,10 @@
+:_mod-docs-content-type: ASSEMBLY
+[id="microshift-understanding-and-configuring-router"]
+= Understanding and configuring the router
+include::_attributes/attributes-microshift.adoc[]
+:context: microshift-nw-router
+
+toc::[]
+
+Learn about default and custom settings for configuring the router with {microshift-short}.
+