Add environment to enable public router

Since the router for the public network is disabled by default, we
should have an enablement environment so people don't have to
manually add it to their env file.

doc/source/deploy/environment-index.rst

@@ -127,6 +127,16 @@ Deploy a Basic OVB Environment Using Neutron port-security
 allow OVB functionality in clouds with security groups enabled.
 
 
+Public Network External Router
+------------------------------
+
+**File:** environments/public-router.yaml
+
+**Description:** Deploy a router that connects the public and external networks. This
+allows the public network to be used as a gateway instead of routing all
+traffic through the undercloud.
+
+
 Disable the Undercloud in a QuintupleO Stack
 --------------------------------------------
 

environments/public-router.yaml

@@ -0,0 +1,13 @@
+# *******************************************************************
+# This file was created automatically by the sample environment
+# generator. Developers should use `tox -e genconfig` to update it.
+# Users are recommended to make changes to a copy of the file instead
+# of the original, if any customizations are needed.
+# *******************************************************************
+# title: Public Network External Router
+# description: |
+#   Deploy a router that connects the public and external networks. This
+#   allows the public network to be used as a gateway instead of routing all
+#   traffic through the undercloud.
+resource_registry:
+  OS::OVB::UndercloudNetworks: ../templates/undercloud-networks-public-router.yaml

sample-env-generator/environments.yaml

@@ -277,4 +277,13 @@ environments:
       overcloud_storage_net: overcloud_storage2
       overcloud_storage_mgmt_net: overcloud_storage_mgmt2
       overcloud_tenant_net: overcloud_tenant2
+  -
+    name: public-router
+    title: Public Network External Router
+    description: |
+      Deploy a router that connects the public and external networks. This
+      allows the public network to be used as a gateway instead of routing all
+      traffic through the undercloud.
+    resource_registry:
+      OS::OVB::UndercloudNetworks: ../templates/undercloud-networks-public-router.yaml