Update notes for submitted changes

* P4:New cli which will call the utilities. This new wrapper "contrail" can be us ed as a CLI/shell to call other utils. Provides help commands. Renamed some files to have underscore in the name than hyphen. Will remove the older hyphen files after the packaging changes are checked in to avoid cyclic dependency. For now both are in. Also made the params for individual scripts to be mandatory. Fine tune as needed later.