Log output of heat-keystone-setup-domain

For debugging reasons output of the script should be logged (and I'm
very sorry that I didn't realize it in the original patch).

Change-Id: I7799021b51039bffd7082c4e587fe49b8424f5d0

manifests/keystone/domain.pp

@@ -50,9 +50,10 @@ class heat::keystone::domain (
   ]
   exec { 'heat_domain_create':
     path        => '/usr/bin',
-    command     => 'heat-keystone-setup-domain &>/dev/null',
+    command     => 'heat-keystone-setup-domain',
     environment => $cmd_evn,
     require     => Package['heat-common'],
+    logoutput   => 'on_failure'
   }
 
   heat_domain_id_setter { 'heat_domain_id':

spec/classes/heat_keystone_domain_spec.rb

@@ -33,9 +33,10 @@ describe 'heat::keystone::domain' do
 
     it 'should exec helper script' do
       is_expected.to contain_exec('heat_domain_create').with(
-        :command     => 'heat-keystone-setup-domain &>/dev/null',
+        :command     => 'heat-keystone-setup-domain',
         :path        => '/usr/bin',
         :require     => 'Package[heat-common]',
+        :logoutput   => 'on_failure',
         :environment => [
             "OS_USERNAME=#{params[:keystone_admin]}",
             "OS_PASSWORD=#{params[:keystone_password]}",