Support purging local_settings.d

In Debian, some files are installed into local_settings.d by their
packages and these conflict with the options added to local_settings.
This introduces an option to purge the directory.

Change-Id: I7e074f78b15ab22d86d6a6a10f573cfc4052023a

manifests/init.pp

@@ -8,6 +8,13 @@
 #    (required) Secret key. This is used by Django to provide cryptographic
 #    signing, and should be set to a unique, unpredictable value.
 #
+#  [*package_ensure*]
+#    (optional) Package ensure state. Defaults to 'present'.
+#
+#  [*purge_conf_d_dir*]
+#    (optional) Purge files in the local_settings.d directory
+#    Defaults to false
+#
 #  [*servername*]
 #    (optional) FQDN used for the Server Name directives
 #    Defaults to facts['networking']['fqdn'].
@@ -24,9 +31,6 @@
 #    in vhost.conf.
 #    Defaults to facts['networking']['fqdn'].
 #
-#  [*package_ensure*]
-#    (optional) Package ensure state. Defaults to 'present'.
-#
 #  [*cache_backend*]
 #   (optional) Horizon cache backend.
 #   Defaults: 'django.core.cache.backends.locmem.LocMemCache'
@@ -534,6 +538,7 @@
 class horizon(
   $secret_key,
   $package_ensure                                   = 'present',
+  Boolean $purge_conf_d_dir                         = false,
   $cache_backend                                    = 'django.core.cache.backends.locmem.LocMemCache',
   $cache_options                                    = undef,
   $cache_timeout                                    = undef,
@@ -723,6 +728,8 @@ class horizon(
   file { $::horizon::params::conf_d_dir:
     ensure  => 'directory',
     mode    => '0755',
+    purge   => $purge_conf_d_dir,
+    recurse => $purge_conf_d_dir,
     owner   => $::horizon::params::wsgi_user,
     group   => $::horizon::params::wsgi_group,
     require => Anchor['horizon::config::begin'],

releasenotes/notes/purge-conf_d_dir-daeefef45e54dcf7.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - |
+    The new ``horizon::purge_conf_d_dir`` parameter has been added.

spec/classes/horizon_init_spec.rb

@@ -67,6 +67,15 @@ describe 'horizon' do
         expect(content).not_to match(/^SESSION_ENGINE/)
       end
 
+      it { is_expected.to contain_file(platforms_params[:conf_d_dir]).with(
+        :ensure  => 'directory',
+        :mode    => '0755',
+        :purge   => false,
+        :recurse => false,
+        :owner   => platforms_params[:wsgi_user],
+        :group   => platforms_params[:wsgi_group],
+      ) }
+
       it 'creates a key file' do
         is_expected.to contain_file(platforms_params[:secret_key_file]).with(
           :mode      => '0600',
@@ -82,6 +91,7 @@ describe 'horizon' do
     context 'with overridden parameters' do
       before do
         params.merge!({
+          :purge_conf_d_dir                 => true,
           :cache_backend                    => 'django.core.cache.backends.memcached.MemcachedCache',
           :cache_timeout                    => 300,
           :cache_options                    => {'SOCKET_TIMEOUT' => 1,'SERVER_RETRIES' => 1,'DEAD_RETRY' => 1},
@@ -212,7 +222,14 @@ describe 'horizon' do
         ])
       end
 
-      it { is_expected.to contain_file(platforms_params[:conf_d_dir]).with_ensure('directory') }
+      it { is_expected.to contain_file(platforms_params[:conf_d_dir]).with(
+        :ensure  => 'directory',
+        :mode    => '0755',
+        :purge   => true,
+        :recurse => true,
+        :owner   => platforms_params[:wsgi_user],
+        :group   => platforms_params[:wsgi_group],
+      ) }
       it { is_expected.to_not contain_exec('refresh_horizon_django_compress') }
 
       it { is_expected.to contain_file(params[:file_upload_temp_dir]) }