Add Gerrit support to RecreateSKPs

Tested by modifying Canary builder to upload a CL: https://task-scheduler.skia.org/job/20161122T163246.824881948Z_00000000000039de
The above uploaded Gerrit CL: https://skia-review.googlesource.com/c/5140/

BUG=skia:5979

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4889

Change-Id: I5527c9d4219b879d5220136949704ea0fc556f85
Reviewed-on: https://skia-review.googlesource.com/4889
Commit-Queue: Ravi Mistry <rmistry@google.com>
Reviewed-by: Eric Boren <borenet@google.com>
3 files changed
tree: 8f00ef6c7f7ae58d7ffeb4d7876fafe7c8add6c8
  1. recipe_modules/
  2. recipes.py
  3. recipes/