restart riak and wait for vnodes to come up

.profile

function riboot() {
  echo "stopping riak.."
  riak stop >/dev/null 2>&1
  echo "starting riak.."
  riak start >/dev/null 2>&1
  echo -n "waiting.."
  until riak-admin test >/dev/null 2>&1; do echo -n "."; sleep 1; done
  echo "done"
}