Add cinder::scheduler::filter for managing scheduler.filter

This patch is aim to add a new class to manage the default
filters param in cinder.scheduler.

Change-Id: Ie37c3708f66c89d7052f300457b76d29fffb449f

manifests/scheduler/filter.pp

@@ -0,0 +1,23 @@
+# == Class: cinder:scheduler::filter
+#
+# This class is aim to configure cinder.scheduler filter
+#
+# === Parameters:
+#
+# [*scheduler_default_filters*]
+#   A comma separated list of filters to be used by default
+#   Defaults to false
+
+class cinder::scheduler::filter (
+  $scheduler_default_filters = false,
+) {
+
+  if ($scheduler_default_filters) {
+    cinder_config { 'DEFAULT/scheduler_default_filters': value  => join($scheduler_default_filters,',')
+    }
+  } else {
+    cinder_config { 'DEFAULT/scheduler_default_filters': ensure => absent
+    }
+  }
+
+}

spec/acceptance/basic_cinder_spec.rb

@@ -95,6 +95,7 @@ describe 'basic cinder' do
       class { '::cinder::client': }
       class { '::cinder::quota': }
       class { '::cinder::scheduler': }
+      class { '::cinder::scheduler::filter': }
       class { '::cinder::volume': }
       # TODO: create a backend and spawn a volume
       EOS

spec/classes/cinder_scheduler_filter_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe 'cinder::scheduler::filter' do
+
+  describe 'when overriding params' do
+
+    let :params do
+      {
+       :scheduler_default_filters => ['AvailabilityZoneFilter', 'CapacityFilter', 'CapabilitiesFilter']
+      }
+    end
+
+    it { is_expected.to contain_cinder_config('DEFAULT/scheduler_default_filters').with_value('AvailabilityZoneFilter,CapacityFilter,CapabilitiesFilter') }
+
+  end
+
+end