[MINOR] Add 1.3, 1.3.1 to master branch EC2 scripts

cc pwendell

P.S: I can't believe this was outdated all along ?

Author: Shivaram Venkataraman <shivaram@cs.berkeley.edu>

Closes #6215 from shivaram/update-ec2-map and squashes the following commits:

ae3937a [Shivaram Venkataraman] Add 1.3, 1.3.1 to master branch EC2 scripts