Update omnibus and omnibus-software
Update omnibus and omnibus-software

Just to keep up-to-date on master.

Also, switch to using github: source in Gemfile. Yey short lines and
faster git: protocol.

Signed-off-by: Robb Kidd <11cd4f9ba93acb67080ee4dad8d03929f9e64bf2@chef.io>

chef/supermarket,chef/supermarket,chef/supermarket,robbkidd/supermarket,robbkidd/supermarket,robbkidd/supermarket,robbkidd/supermarket,nellshamrell/supermarket,juliandunn/supermarket,juliandunn/supermarket,juliandunn/supermarket,chef/supermarket,chef/supermarket,nellshamrell/supermarket,nellshamrell/supermarket,nellshamrell/supermarket,juliandunn/supermarket