Remove autoresolved cookbooks from Berksfile.
Add roles and environments for margarine's vagrant.
Add chef-solo-search to base role.
Update margarine roles to bypass installation.
Add redis provisioner.

The redis service needs to listen on the default address 0.0.0.0 rather
than just loopback.  I've added a small sed script that flips this and
restarts redis.
Minor improvements to structure and lint.

With this the three supporting boxes: queue, token_store, and datastore
all work perfectly and are ready to provide a base for margarine's
boxes.
Fix JSON syntax in margarine roles.