network: Wait for ovsdb-server on boot
network: Wait for ovsdb-server on boot

Before this patch, network tries to boot before ovsdb-server boots,
and such behavior spawns some unnessesary warning logs. This patch
fixes this behavior by letting network try to connect to ovsdb
before it boots.

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