Deprecate IronicIPXEEnabled

The ironic.conf [pxe] ipxe_enabled was removed from Ironic in Ussuri,
and has also just been removed from puppet-ironic[1]

This change deprecates IronicIPXEEnabled and documents it as having no
effect.

[1] https://review.opendev.org/c/openstack/puppet-ironic/+/789592

Change-Id: I2778336ca58f17b71b9459ab9fe91cf2522e5c7e

deployment/ironic/ironic-conductor-container-puppet.yaml

@@ -183,8 +183,8 @@ parameters:
                  use "http" for the local HTTP server (the same as for iPXE).
     type: string
   IronicIPXEEnabled:
-    default: true
+    default: false
-    description: Whether to use iPXE instead of PXE for deployment.
+    description: DEPRECATED, boot interfaces are specified on a per-node basis
     type: boolean
   IronicIPXEPort:
     default: 8088
@@ -254,6 +254,16 @@ parameters:
                  successfully lease addresses.
     type: string
 
+parameter_groups:
+- label: deprecated
+  description: |
+    The following parameters are deprecated and will be removed. They should not
+    be relied on for new deployments. If you have concerns regarding deprecated
+    parameters, please contact the TripleO development team on IRC or the
+    Openstack mailing list.
+  parameters:
+  - IronicIPXEEnabled
+
 conditions:
   default_deploy_interface_set:
     not: {equals : [{get_param: IronicDefaultDeployInterface}, '']}
@@ -356,7 +366,6 @@ outputs:
                 - - 'http://'
                   - "%{hiera('ironic_conductor_http_host')}:"
                   - {get_param: IronicIPXEPort}
-            ironic::drivers::pxe::ipxe_enabled: {get_param: IronicIPXEEnabled}
             ironic::drivers::pxe::ipxe_timeout: {get_param: IronicIPXETimeout}
             ironic::drivers::pxe::ip_version: {get_param: IronicIpVersion}
             # NOTE: bind IP is found in hiera replacing the network name with the

releasenotes/notes/deprecate-IronicIPXEEnabled-6cb68b0bfee5ac4d.yaml

@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    The parameter IronicIPXEEnabled has been deprecated since Ironic uses
+    per-node boot interfaces since Ussuri.