Deprecate support for networking-odl

The networking-odl project is being deprecated[1].

This change deprecates the implementations to deploy networking-odl,
because the project is no longer developed.

[1] https://lists.openstack.org/pipermail/openstack-discuss/2023-March/033003.html

Change-Id: I75c04c63288387946e1c89b0677770cf10db73cd

manifests/plugins/ml2/opendaylight.pp

@@ -1,4 +1,5 @@
 #
+# DEPRECATED !!
 # Install the OpenDaylight and generate config file
 # from parameters in the other classes.
 #
@@ -51,6 +52,8 @@ class neutron::plugins::ml2::opendaylight (
   include neutron::params
   require neutron::plugins::ml2
 
+  warning('Support for networking-odl has been deprecated.')
+
   package { 'python-networking-odl':
     ensure => $package_ensure,
     name   => $::neutron::params::odl_plugin_package,

manifests/plugins/ovs/opendaylight.pp

@@ -1,4 +1,5 @@
 #
+# DEPRECATED !!
 # Configure OVS to use OpenDaylight
 #
 # === Parameters
@@ -121,6 +122,8 @@ class neutron::plugins::ovs::opendaylight (
 
   include neutron::deps
 
+  warning('Support for networking-odl has been deprecated.')
+
   # Handle the case where ODL controller is also on this host
   Service<| title == 'opendaylight' |> -> Exec <| title == 'Wait for NetVirt OVSDB to come up' |>
 

releasenotes/notes/deprecate-networking-odl-d8c4e26ffb283811.yaml

@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    Support for networking-old has been deprecated and will be removed in
+    a future release.