Fix dry runs in github autoroller
Fix dry runs in github autoroller

Bug: skia:8153
Change-Id: I9f012b43cf2e9816f6eac88b3e3354011b13a7a2
Reviewed-on: https://skia-review.googlesource.com/142504
Reviewed-by: Eric Boren <0e499112533c8544f0505ea0d08394fb5ad7d8fa@google.com>
Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@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