test: Specify test plan name pattern

BUG=chromium:1063474
TEST=./generate.sh

Change-Id: Ic3550f13146e03b6ea48159c876ef466755d0c55
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/infra/proto/+/2120289
Commit-Queue: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Alex Zamorzaev <zamorzaev@chromium.org>
2 files changed