zookeeper: Simplify zookeeper.spec
zookeeper: Simplify zookeeper.spec

Removes link function, and only connects to port 2181.

kklin/kelda,quilt/quilt,LuiseV/quilt,NetSys/quilt,LuiseV/quilt,kklin/kelda,kelda/kelda,ZhongtianWang/quilt,tejasmanohar/quilt,kayousterhout/quilt,NetSys/quilt,kayousterhout/quilt,ejj/quilt-dev,ZhongtianWang/quilt,akshayknarayan/quilt,PenguinToast/quilt,quilt/quilt,mmussomele/quilt,stevenlin598/quilt,kklin/quilt,kklin/quilt,secant/quilt,mmussomele/quilt,quilt/quilt,secant/quilt,akshayknarayan/quilt,akshayknarayan/quilt,mmussomele/quilt,kklin/quilt,ejj/quilt-dev,PenguinToast/quilt,stevenlin598/quilt,secant/quilt,PenguinToast/quilt,PenguinToast/quilt,stevenlin598/quilt,LuiseV/quilt,NetSys/quilt,ejj/quilt-dev,secant/quilt,kelda/kelda,stevenlin598/quilt,ZhongtianWang/quilt,kayousterhout/quilt,kelda/kelda,kayousterhout/quilt,tejasmanohar/quilt,tejasmanohar/quilt,mmussomele/quilt,PenguinToast/quilt,quilt/quilt,akshayknarayan/quilt,kklin/kelda,kklin/kelda,NetSys/quilt,tejasmanohar/quilt,NetSys/quilt,kklin/quilt,mmussomele/quilt,mmussomele/quilt,stevenlin598/quilt,ZhongtianWang/quilt,secant/quilt,LuiseV/quilt,ejj/quilt-dev,kelda/kelda,LuiseV/quilt,stevenlin598/quilt