Change passenger apache installation to log only on_failure

rvm/manifests/passenger/apache.pp

@@ -12,7 +12,7 @@
     path      => "/usr/local/rvm/bin:/usr/bin:/usr/sbin:/bin",
     # Cut the path for the .so file from the snippet (1st row 3rd field)
     unless    => "test -f \"`rvm $ruby exec passenger-install-apache2-module  --snippet | head -n 1 | cut -f 3 -d ' '`\"",
-    logoutput => true,
+    logoutput => on_failure,
     require   => Package["$ruby@global:passenger"],
   }
 }