Add PreCommandCheck
Add PreCommandCheck

- GetURL, PreCreateCheck, Start, Stop, Restart

Signed-off-by: Koichi Shiraishi <13fbd79c3d390e5d6585a21e11ff5ec1970cff0c@zchee.io>

zchee/docker-machine-driver-xhyve,zchee/docker-machine-driver-xhyve