WIP: Collection of fun bash scripts for managing elasticsearch

The rolling upgrade dashboard is my favorite. Mainly putting
these in puppet so they don't get lost and will be easier to
call from all elastic hosts. Feel free to organize better,
make es-tool into a wrapper, etc.

Change-Id: Idba07d8d16d0534068e0521d47fcee42ead88bf5
Merge "WIP: Collection of fun bash scripts for managing elasticsearch" into production