[r=gz] Stop using example.com in test code
[r=gz] Stop using example.com in test code

Per RFC 2606, there are several options for domain names which
can be used without fear of conflict with real sites. Currently
our tests use 'example.com' widely. This has the disadvantage
of actually resolving, so if the test code accidentally ends
up connecting to the address, it will trigger at least a
lookup.

Using "testing.invalid" instead fails at local dns resolution
and stands out nicely in assertions.
ericsnowcurrently/juju-charmstore,jrwren/charmstore,mhilton/charmstore,juju/charmstore,urosj/charmstore-1,makyo/charmstore,mhilton/charmstore,makyo/charmstore,ericsnowcurrently/juju-charmstore,urosj/charmstore-1,wallyworld/charmstore,frankban/charmstore,makyo/charmstore,mhilton/charmstore,jrwren/charmstore,ericsnowcurrently/juju-charmstore,jrwren/charmstore,wallyworld/charmstore,juju/charmstore,frankban/charmstore,mhilton/juju-charmstore,urosj/charmstore-1,wallyworld/charmstore,fabricematrat/charmstore,fabricematrat/charmstore,fabricematrat/charmstore,frankban/charmstore,juju/charmstore,mhilton/juju-charmstore,mhilton/juju-charmstore