run .skps on PDF bots

Change-Id: Icd1795a5b1aa59ffcaaa60e3d409ea8a3a0e36da
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268644
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2 files changed