AMBARI-6496. Additional fix: keberization needs hdfs_principal_name property to be saved in hadoop-env section of command file, otherwise it fails. (Alejandro Fernandez via swagle)

ambari-web/app/data/HDP2/secure_properties.js

@@ -123,6 +123,7 @@ module.exports =
       "isOverridable": false,
       "isReconfigurable": false,
       "serviceName": "GENERAL",
+      "filename": "hadoop-env.xml",
       "category": "AMBARI"
     },
     {