ovs: Build kernel module for new DigitalOcean version
ovs: Build kernel module for new DigitalOcean version

The DigitalOcean Ubuntu image now has a slightly higher kernel version.

quilt/quilt,LuiseV/quilt,quilt/quilt,kklin/quilt,kelda/kelda,kklin/quilt,kelda/kelda,kklin/kelda,kklin/quilt,NetSys/quilt,quilt/quilt,LuiseV/quilt,NetSys/quilt,kayousterhout/quilt,kklin/kelda,quilt/quilt,kklin/kelda,tejasmanohar/quilt,LuiseV/quilt,ejj/quilt-dev,tejasmanohar/quilt,kelda/kelda,kklin/quilt,NetSys/quilt,kayousterhout/quilt,kayousterhout/quilt,LuiseV/quilt,tejasmanohar/quilt,NetSys/quilt,kelda/kelda,ejj/quilt-dev,tejasmanohar/quilt,kayousterhout/quilt,ejj/quilt-dev,LuiseV/quilt,NetSys/quilt,kklin/kelda,ejj/quilt-dev