Add utility script importing setting the monitoring flag from the wiki to pkgdb

This script retrieves the list of packages marked to monitor in  the
wiki and set their monitoring flag in pkgdb.
Remove debugging code
Catch PkgDBException and print then instead of printing the action message
Add support for command line argument to specify the pkgdb instance to udpate

This way one can update Fedora's pkgdb in stg, in prod or another pkgdb
instance.
Merge pull request #115 from fedora-infra/monitoring_script

Monitoring script