make default logger include sys.argv[0]

Log the name of the program that is doing things
(ala, subscription-manager, subscription-manager-gui,
rhsmcertd-worker, etc)

Add a logging Filter that subs in the cli info

Make sure init_logger happens in each app, and
happens before injectioninit.
Merge pull request #771 from candlepin/alikins/cmd_name_logging

make default logger include sys.argv[0]