test/plan: Add Exclusion.Action

Adds a way for test plans to specify tests that should be run, but whose
results must be ignored.

Bug: None
Change-Id: I7f752a04d83d8d89cf020a0b82301eb3eee15bef
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2236938
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: C Shapiro <shapiroc@chromium.org>
2 files changed