Replace deprecated nova::compute::ironic::max_concurrent_builds

Depends-on: https://review.opendev.org/#/c/749925/
Change-Id: Ic5badc36309f57c15eb941a27c8b7601dbdd8cec

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

@@ -117,7 +117,7 @@ outputs:
           - nova::compute::force_config_drive: true
             nova::compute::reserved_host_memory: '0'
             nova::compute::vnc_enabled: false
-            nova::compute::ironic::max_concurrent_builds: {get_param: IronicMaxConcurrentBuilds}
+            nova::compute::max_concurrent_builds: {get_param: IronicMaxConcurrentBuilds}
             nova::ironic::common::password: {get_param: IronicPassword}
             nova::ironic::common::project_name: 'service'
             nova::ironic::common::auth_url: {get_param: [EndpointMap, KeystoneInternal, uri_no_suffix]}