update bundler to make the hab build happy
update bundler to make the hab build happy

Signed-off-by: Josh Brand <e34aad89c487e84bd2536d0deba70a3c2563b55e@chef.io>

chef/opscode-omnitruck,chef/omnitruck,chef/omnitruck,chef/opscode-omnitruck,chef/opscode-omnitruck,chef/omnitruck