apache::mod::spdy: Add check for operatingsystem, lint fixes

apache/manifests/init.pp

@@ -966,15 +966,23 @@ class apache::mod::wsgi($http=true, $https=true, $embedded=true) {
 
 }
 
+
 # Install Google's mod_spdy
 #
 class apache::mod::spdy {
 
+  case $::operatingsystem {
+    "centos","redhat","fedora": { }
+    default: {
+      fail("Apache module not supported in ${::operatingsystem}.")
+    }
+  }
+
   $spdy_package = "mod-spdy-beta"
-  
+
   include yum::repo::mod_spdy
 
-  package { "$spdy_package":
+  package { $spdy_package:
     ensure  => installed,
     require => Yum::Repo["mod_spdy"],
   }