Keep same version for server and client

[concaf]

Solve this either by installing the appropriate version of docker-py or by running shipy in a container with compatible version of docker-py with docker daemon

[dustymabe]

projectatomic/atomicapp#749 may give a clue how to pull this off without having to have multiple versions of docker-py

[concaf]

@dustymabe will take a look into that, this is how I am implementing this right now, https://github.com/containscafeine/shipy/blob/master/dpyexec.py#L336-L373