go 1.7.4 introduced official go ppc64le binaries, so use those
instead of using older versions of go and building from src.
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>
(cherry picked from commit 62ab6809bd)
Signed-off-by: Victor Vieux <vieux@docker.com>
this switches all go download links to use a redirect,
https://golang.org/dl/ instead of the direct source.
Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com>