Deprecate tripleo::profile::base::docker(_registry)

These profiles are replaced by https://github.com/openstack/ansible-role-container-registry,
so we deprecate it now and will remove the code in the future.

Depends-On: Iee0e08cd48f173a39a6f3a1ea54b29e370d4f334
Change-Id: I9e2a475e4582deec383b92f368e9a834122f65bb

manifests/profile/base/docker.pp

@@ -101,6 +101,8 @@ class tripleo::profile::base::docker (
   $insecure_registry = false,
 ) {
 
+  warning('tripleo::profile::base::docker(_registry) are deprecated and will be removed in the future.')
+
   if $step >= 1 {
     package {'docker':
       ensure => installed,

releasenotes/notes/docker_registry-163bf23bc95761a8.yaml

@@ -0,0 +1,5 @@
+---
+deprecations:
+  - |
+    tripleo::profile::base::docker(_registry) are deprecated (replaced by ansible-role-container-registry)
+    and will be removed in the next release.