Add support for quota parameters

This patch introduces the new ``aodh::quota`` class, to support
parameters which define quota amount in aodh.

Change-Id: Ice37e64bddb0e128f3fc98de7b5fe35bd08e5f36

manifests/quota.pp

@@ -0,0 +1,32 @@
+# The aodh::quota class helps configure quota settings
+#
+# == Params
+#
+#  [*user_alarm_quota*]
+#    (optional) Maximum number of alarms defined for a user.
+#    Defaults to $:os_service_default.
+#
+#  [*project_alarm_quota*]
+#    (optional) Maximum number of alarms defined for a project.
+#    Defaults to $:os_service_default.
+#
+#  [*alarm_max_actions*]
+#    (optional) Maximum count of actions for each state of an alarm.
+#    Defaults to $:os_service_default.
+#
+class aodh::quota (
+  $user_alarm_quota    = $::os_service_default,
+  $project_alarm_quota = $::os_service_default,
+  $alarm_max_actions   = $::os_service_default,
+) {
+
+  include aodh::deps
+  include aodh::params
+
+  aodh_config {
+    'api/user_alarm_quota':    value => $user_alarm_quota;
+    'api/project_alarm_quota': value => $project_alarm_quota;
+    'api/alarm_max_actions':   value => $alarm_max_actions;
+  }
+
+}

releasenotes/notes/quota-2c8473e178a2f566.yaml

@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    The ``aodh::quota`` class has been added to support parameters to define
+    quota.

spec/classes/aodh_quota_spec.rb

@@ -0,0 +1,48 @@
+require 'spec_helper'
+
+describe 'aodh::quota' do
+
+  shared_examples_for 'aodh::quota' do
+
+    context 'with default parameters' do
+      let :params do
+        {}
+      end
+
+      it 'configures default values' do
+        is_expected.to contain_aodh_config('api/user_alarm_quota').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_aodh_config('api/project_alarm_quota').with_value('<SERVICE DEFAULT>')
+        is_expected.to contain_aodh_config('api/alarm_max_actions').with_value('<SERVICE DEFAULT>')
+      end
+    end
+
+    context 'when specific parameters' do
+      let :params do
+        {
+          :user_alarm_quota    => 10,
+          :project_alarm_quota => 20,
+          :alarm_max_actions   => 5,
+        }
+      end
+
+      it 'configures specified values' do
+        is_expected.to contain_aodh_config('api/user_alarm_quota').with_value(10)
+        is_expected.to contain_aodh_config('api/project_alarm_quota').with_value(20)
+        is_expected.to contain_aodh_config('api/alarm_max_actions').with_value(5)
+      end
+    end
+  end
+
+  on_supported_os({
+    :supported_os   => OSDefaults.get_supported_os
+  }).each do |os,facts|
+    context "on #{os}" do
+      let (:facts) do
+        facts.merge!(OSDefaults.get_facts())
+      end
+
+      it_configures 'aodh::quota'
+    end
+  end
+
+end