Bump client API version to 1.12
Bump client API version to 1.12

panubo/systemd-docker,cdecker/systemd-docker,cdecker/systemd-docker,clehene/systemd-docker,panubo/systemd-docker,ibuildthecloud/systemd-docker,OnePaaS/systemd-docker,ibuildthecloud/systemd-docker,Ranger-X/systemd-docker,clehene/systemd-docker,Ranger-X/systemd-docker,OnePaaS/systemd-docker