s390x node-1 has kernel 4.6.0, kernel.CompareKernelVersion() returns 0 if the kernels are equal, so include that. Full logic for CompareKernelVersion() is a > b ret 1, a == b ret 0, a < b ret -1 Signed-off-by: Christopher Jones <tophj@linux.vnet.ibm.com> (cherry picked from commit aa5ea652c8864f014e1fa480d7e504f0d742c170) Signed-off-by: Eli Uriegas <eli.uriegas@docker.com>