BZ #1117462 - Make all needed equallogic backend fields into array

The thin_provision, use chap, chap login, chap password, and
backend_name were not set as arrays. This makes them into arrays, and
will then pass the correct values to puppet manifest.
Merge pull request #314 from bcrochet/bz/1117462

BZ #1117462 - Make all needed equallogic backend fields into array