Add a k8s cheat sheet to trooper docs

No-Try: true
Docs-Preview: https://skia.org/?cl=190201
Bug: skia:
Change-Id: Idd7d1838a648e1e73d76720dc07bd425ff7929a3
Reviewed-on: https://skia-review.googlesource.com/c/190201
Reviewed-by: Joe Gregorio <jcgregorio@google.com>
Commit-Queue: Kevin Lubick <kjlubick@google.com>
1 file changed