cloudcfg: Remove unnecessary Docker directory creation
cloudcfg: Remove unnecessary Docker directory creation

The system works fine without it. Furthermore, the arguments to `chmod`
were flipped, causing an error to be printed in the cloud init script
logs.

LuiseV/quilt,kklin/quilt,LuiseV/quilt,kklin/kelda,kklin/kelda,NetSys/quilt,LuiseV/quilt,kelda/kelda,kklin/kelda,quilt/quilt,NetSys/quilt,quilt/quilt,kelda/kelda,LuiseV/quilt,NetSys/quilt,kklin/quilt,NetSys/quilt,NetSys/quilt,quilt/quilt,kelda/kelda,kklin/quilt,kklin/quilt,LuiseV/quilt,quilt/quilt,kelda/kelda,kklin/kelda