Automatic merge from submit-queue

Include CNI for all architectures in the hyperkube image

Can some of you (@jfrazelle @mikedanese) quickly lgtm this?
I'd like it if we got it merged before v1.4.0-alpha.2

It's not a huge change, I'm just cross-compiling this CNI stuff while waiting for the v0.4.0 which likely will release binaries for all arches.