detail debugging tips for flaky, broken, and non-deterministic builds
detail debugging tips for flaky, broken, and non-deterministic builds

source of tips: https://youtu.be/XItY0LmdiFA

Change-Id: I3f4bb8b9bc8f78bb377fe9af4df374ddf32ded17
Reviewed-on: https://skia-review.googlesource.com/c/buildbot/+/532007
Reviewed-by: Kevin Lubick <7cdab2cfab351f23814786ba39716e90eed69047@google.com>
Commit-Queue: Jorge Betancourt <63f45fa27f6ebe96d0924e755262c906d4cb18db@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot