Workaround xz for docker load, pin docker to latest ver

Docker >=1.3.2 runs load operation within a chroot
that does not container xz utility. It is necessary
to extract xz first and then pipe it into docker load.

Pin version of docker to latest stable 1.3.2 version.
Change-Id: I3c7ad72bbe688efcc40e80fca34660b349f3d9b1
Closes-Bug: #1397970
Merge "Workaround xz for docker load, pin docker to latest ver"