Test config should use different ports

[jbenet]

would be nice if test config randomized ports or used different ports than default cause i cant run tests when my node is running

[travisperson]

I believe it does, have you ran into issues?

The testconfig.json file is not used right now, the tests start a disposable node which will picks a random port for the API to listen on.

[travisperson]

See: https://github.com/ipfs/node-ipfsd-ctl/blob/master/index.js#L189

I guess we need to also have it pick a different swarm port as well.

[krl]

@jbenet this should be fixed with #30, using tcp/0 for swarm as well