Now that we can do nested virtualization on GCE, that means we can run
the Android emulator (which requires KVM) on GCE and at least get
fast trybots and such for android-amd64.
Updates golang/go#23824
Change-Id: I0da38c7fa0f15492230a31291d2921ba72f2151d
Reviewed-on: https://go-review.googlesource.com/c/163738
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Brad Fitzpatrick