Roll recipe dependencies (trivial).

This is an automated CL created by the recipe roller. This CL rolls recipe
changes from upstream projects (e.g. depot_tools) into downstream projects
(e.g. tools/build).


More info is at https://goo.gl/zkKdpD. Use https://goo.gl/noib3a to file a bug
(or complain)

recipe_engine:
  https://crrev.com/8ec7b6d3ca59e7c178ad1b03e4408da556fddafa [recipes.cfg] set canonical_url and autoroller options (iannucci@chromium.org)

TBR=iannucci@chromium.org

Change-Id: Ia29d2ce955cc58c0ffbed15eee8aaa93a1cb6b6d
Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Reviewed-on: https://chromium-review.googlesource.com/461557
Reviewed-by: <recipe-roller@chromium.org>
Commit-Queue: <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -4,7 +4,7 @@
     {
       "branch": "master",
       "project_id": "recipe_engine",
-      "revision": "230fcdf5d57a084071e3617885b3286353ab1350",
+      "revision": "8ec7b6d3ca59e7c178ad1b03e4408da556fddafa",
       "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
     }
   ],