Add vanilla plugin with Hadoop 2.4.0

Hadoop 2.4.0 fails on pig job
https://bugs.launchpad.net/sahara/+bug/1340738

partially implements blueprint add-vanilla-2-hadoop-2-4-0

Change-Id: Iaa36dcf4fbb7c5162ca768bae03cc7faeb988a6b
Merge "Add vanilla plugin with Hadoop 2.4.0"