Define nova::cache parameters in tht

Migrate parameter definitions for nova::cache module from
puppet-tripleo to tht, so that we can be less dependent on puppet
to set configurable items.

Depends-on: https://review.opendev.org/#/c/716988/
Change-Id: I796196f7a6e0f1235ac269a55e64161613018b1d

manifests/profile/base/nova.pp

@@ -78,15 +78,6 @@
 #   (Optional) Array of ipv4 or ipv6 addresses for memcache.
 #   Defaults to hiera('memcached_node_ips')
 #
-# [*enable_cache*]
-#   (Optional) Enable the use of cache. Note that it is unsupported
-#   to disable this key. It is only useful for debugging purposes.
-#   Defaults to true
-#
-# [*cache_backend*]
-#   (Optional) Backend implementation to store cache
-#   Defaults to 'dogpile.cache.memcached'
-#
 class tripleo::profile::base::nova (
   $bootstrap_node          = hiera('nova_api_short_bootstrap_node_name', undef),
   $oslomsg_rpc_proto       = hiera('oslo_messaging_rpc_scheme', 'rabbit'),
@@ -103,8 +94,6 @@ class tripleo::profile::base::nova (
   $oslomsg_notify_use_ssl  = hiera('oslo_messaging_notify_use_ssl', '0'),
   $step                    = Integer(hiera('step')),
   $memcached_ips           = hiera('memcached_node_ips'),
-  $enable_cache            = true,
-  $cache_backend           = 'dogpile.cache.memcached',
 ) {
 
   if $::hostname == downcase($bootstrap_node) {
@@ -130,8 +119,6 @@ class tripleo::profile::base::nova (
     include nova::config
     include nova::logging
     class { 'nova::cache':
-      enabled          => $enable_cache,
-      backend          => $cache_backend,
       memcache_servers => $memcache_servers,
     }
     class { 'nova':

releasenotes/notes/nova-cache-in-tht-533e048fd6ccc65f.yaml

@@ -0,0 +1,6 @@
+---
+deprecations:
+  - |
+    The ``enable_cache`` and ``cache_backend`` in
+    ``tripleo::profile::base::nova`` class were removed because now these
+    parameters are defined in tripleo-heat-templates.