Avoid unresolvable hostname

... to avoid the following error during service startup.

ERROR: epmd error for host foobar: nxdomain (non-existing domain)

Author: kajinamit

spec/acceptance/clustering_spec.rb

@@ -67,16 +67,16 @@ class { 'rabbitmq':
     end
   end
 
-  context 'rabbitmq::cluster[:local_node] = foobar' do
+  context 'rabbitmq::cluster[:local_node] = localhost' do
     it 'runs successfully' do
       pp = <<-EOS
       class { 'erlang':  } ->
       class { 'rabbitmq':
-        cluster                  => { 'name' => 'rabbit_cluster', 'init_node' => 'foobar', 'local_node' => 'foobar' },
+        cluster                  => { 'name' => 'rabbit_cluster', 'init_node' => 'localhost', 'local_node' => 'localhost' },
         config_cluster           => true,
-        cluster_nodes            => ['foobar', 'rabbit2'],
+        cluster_nodes            => ['localhost', 'rabbit2'],
         cluster_node_type        => 'ram',
-        environment_variables    => { 'NODENAME' => 'rabbit@foobar' },
+        environment_variables    => { 'NODENAME' => 'rabbit@localhost' },
         erlang_cookie            => 'TESTCOOKIE',
       }
       EOS