Jarv/add back s3cmd

aws sync is not looking like it will be reliable

Change boxname on fullstack, and remove ansible play from devstack

Add curl for vagrant and update docs for run_role.yml

Add common as a dependency of jenkins master.

Download JSCover from S3

turn off dump vars by default

leaving enabled for single server sandboxes

fixes some bugs introduced by the -c option

removing vars_files

adding aws role to the edx-east plays

sending logs to s3 won't be enabled until we update
the var file for the vpc

adding option to the sync script to skip .log files

Add deployment to the cloudformation name.

default to old change screen

Turn off clustering by default.

Feanil/param class b