vm_guest_tools: install goprotos for tremplin

BUG=chromium:844079
TEST=tremplin_proto is installed in GOPATH
CQ-DEPEND=CL:1096901

Change-Id: I678832bcf99f638f2e406766af7e0599b5a5a876
Reviewed-on: https://chromium-review.googlesource.com/1096907
Commit-Ready: Stephen Barber <smbarber@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
1 file changed