Add config option for ODL IPv6 deployment

Add a flag to specify which IP version to
deploy ODL on via Puppet-ODL.

Change-Id: Idd257cf4666b853eb4c52861f9f400b6dbdeeadb
Closes-Bug: #1783196
(cherry picked from commit 53b2cc0b56)

environments/network-isolation-v6.j2.yaml

@@ -66,3 +66,5 @@ parameter_defaults:
   ManilaIPv6: True
   # Enable IPv6 environment for Redis.
   RedisIPv6: True
+  # Enable IPv6 environment for OpenDaylight
+  OpenDaylightEnableIPv6Deployment: True

puppet/services/opendaylight-ovs.yaml

@@ -130,6 +130,10 @@ parameters:
     type: string
     tags:
       - role_specific
+  OpenDaylightEnableIPv6Deployment:
+    description: Enable deployment of ODL over IPv6 underlay network
+    type: boolean
+    default: false
 
 parameter_groups:
 - label: deprecated
@@ -215,6 +219,7 @@ outputs:
                dport: 4789
               '136 neutron gre networks':
                proto: 'gre'
+            enable_ipv6: {get_param: OpenDaylightEnableIPv6Deployment}
           -
             if:
               - internal_tls_enabled

releasenotes/notes/add-support-for-IPv6-deployment-4c5b577cfb38c416.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    Add support for ODL deployment on IPv6 networks.