Only bundle on app servers, other servers don't have bundler installed
Only bundle on app servers, other servers don't have bundler installed

Change-Id: I950f07abbc41f96b2935643f1f8165fe5fa013f5
Reviewed-on: http://review.engineyard.com/155
Reviewed-by: Andre Arko <84de7f247766c9f87e4737d92fee235e10beaf0d@engineyard.com>
Tested-by: Andre Arko <84de7f247766c9f87e4737d92fee235e10beaf0d@engineyard.com>

engineyard/engineyard-serverside,engineyard/engineyard-serverside,engineyard/engineyard-serverside,engineyard/engineyard-serverside