[infra] Add new go_deps asset

This contains the Go code dependencies of our infra repo and will be
used to insulate us from upstream changes which break us due to API
changes, etc.

Bug: skia:
Change-Id: I6ce36a4e41b6d7686fe2598ba980640854cd4f11
Reviewed-on: https://skia-review.googlesource.com/145158
Commit-Queue: Eric Boren <borenet@google.com>
Reviewed-by: Ravi Mistry <rmistry@google.com>
33 files changed