Disable legacy ceilometer api by default

Ceilometer api is deprectaed in Ocata. Lets disable by default.
This can still be enabled by setting enable_legacy_ceilometer_api
param.

Change-Id: Iffb8c2cfed53d8b29e777c35cee44921194239e9

manifests/profile/base/ceilometer/api.pp

@@ -18,6 +18,10 @@
 #
 # === Parameters
 #
+# [*enable_legacy_api*]
+#   (Optional) Enable legacy ceilometer api service.
+#   Defaults to hiera('enable_legacy_api', false)
+#
 # [*ceilometer_network*]
 #   (Optional) The network name where the ceilometer endpoint is listening on.
 #   This is set by t-h-t.
@@ -53,6 +57,7 @@
 #   Defaults to hiera('step')
 #
 class tripleo::profile::base::ceilometer::api (
+  $enable_legacy_api             = hiera('enable_legacy_ceilometer_api', false),
   $ceilometer_network            = hiera('ceilometer_api_network', undef),
   $certificates_specs            = hiera('apache_certificates_specs', {}),
   $enable_internal_tls           = hiera('enable_internal_tls', false),
@@ -76,7 +81,7 @@ class tripleo::profile::base::ceilometer::api (
     $tls_keyfile = undef
   }
 
-  if $step >= 4 {
+  if $step >= 4 and $enable_legacy_api {
     include ::ceilometer::api
     class { '::ceilometer::wsgi::apache':
       ssl_cert => $tls_certfile,

spec/classes/tripleo_profile_base_ceilometer_api_spec.rb

@@ -32,9 +32,10 @@ describe 'tripleo::profile::base::ceilometer::api' do
       end
     end
 
-    context 'with step 4' do
+    context 'with step 4 and enable_legacy_api' do
       let(:params) { {
-        :step           => 4,
+        :step              => 4,
+	:enable_legacy_api => true,
       } }
 
       it 'should trigger complete configuration' do
@@ -42,6 +43,17 @@ describe 'tripleo::profile::base::ceilometer::api' do
         is_expected.to contain_class('ceilometer::wsgi::apache')
       end
     end
+
+    context 'with step 4 and default enable_legacy_api' do
+      let(:params) { {
+	:step => 4,
+      } }
+
+      it 'should do nothing' do
+        is_expected.to_not contain_class('ceilometer::api')
+        is_expected.to_not contain_class('ceilometer::wsgi::apache')
+      end
+    end
   end