Update elastic search

* From 1.1.x to 1.2.x
* Need to enable dynamic scripting in 1.2.x
* Add some more memory
* Allow to manage java (needs JRE 7, we had 6)
* Update submodule to 0.3.0

Change-Id: Ibcfc643133da13bcac420ce003cf584a6c3b3906
Merge "Update elastic search"