Run go test on Travis

- Fix config sample for proper working etcd_servers section
- Include basic config.test.ini which uses our public etcd server for discovery
- Run the test on travis
- Set memcached to load on travis

@jrconlin, @kitcambridge: r?
Yup, its on a cheap spot instance, publicly exposed, with etcd in a container setup such that it nukes itself every few hours (no persistent data).