Removing the reporting from hostab.rb.

Cleaning up cron file which
collects hosts and adds them to host_table. Hopefully, I can capture all
the hosts on this segment for use with switch_mapper3.
Moving the snmp location to method, snmp_location. The report method
call uses this method as a parameter.
Prety-printing source.
Cleanin up switch creation, separating reporting from file saving.