update OS data in metadata.json

metadata.json

@@ -9,10 +9,18 @@
   "issues_url": "https://github.com/stschulte/puppet-rpmkey/issues",
   "dependencies": [ ],
   "operatingsystem_support": [
+    {
+      "operatingsystem": "CentOS",
+      "operatingsystemrelease": [ "5", "6", "7" ]
+    },
     {
       "operatingsystem": "RedHat",
-      "operatingsystemrelease": [ "5.0", "6.0" ]
+      "operatingsystemrelease": [ "5", "6", "7" ]
+    },
+    {
+      "operatingsystem": "SLES",
+      "operatingsystemrelease": [ "11", "12" ]
     }
   ],
-  "tags": ["rpm", "gpg"]
+  "tags": [ "rpm", "gpg" ]
 }