Fix hhvm tests

Author: mblaschke

tests/serverspec/spec/shared/hhvm/listening.rb

@@ -1,7 +1,7 @@
 shared_examples 'hhvm::listening::public' do
     describe port(9000) do
         it "hhvm should be listening", :retry => 20, :retry_wait => 3 do
-            should be_listening.with('tcp6')
+            should be_listening.with('tcp')
         end
     end
 end
@@ -15,7 +15,7 @@
 
     describe port(9000) do
         it "hhvm should be listening local", :retry => 20, :retry_wait => 3 do
-            should be_listening.on('::1').with('tcp6')
+            should be_listening.on('::1').with('tcp')
         end
     end
 end