Upgrade docker 1.7.0 -> 1.7.1
Upgrade docker 1.7.0 -> 1.7.1

Adam-Lipshay/dind-jenk-slave,mattrobenolt/dind-jenkins-slave,tehranian/dind-jenkins-slave,mizunashi-mana/dind-jenkins-slave,sunnycmf/dind-jenkins-swarm-slave