use conf.hosts/port instead of host_string for easier overriding with context_managers
use conf.hosts/port instead of host_string for easier overriding with context_managers

davidcaste/fabtools,n0n0x/fabtools-python,pahaz/fabtools,badele/fabtools,sociateru/fabtools,prologic/fabtools,ahnjungho/fabtools,wagigi/fabtools-python,hagai26/fabtools,ronnix/fabtools,fabtools/fabtools,pombredanne/fabtools,bitmonk/fabtools,AMOSoft/fabtools