Now that gccgo isn't supported, change the ppc64le dockerfile base image
from a debian:jessie based + gccgo image to a debian:jessie + golang image.
Also includes a go path change to be more consistent across Dockerfiles.
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
Upstream-commit: a243f35cf8906dc6d541dc3dd779a0a2c90cfa12
Component: engine