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.
recipe_engine:
  https://crrev.com/49d884b8bf92c358eab83cf2da43ef9863a89bbb file: correctly pass --symlinks after the command name (phajdan.jr@chromium.org)


TBR=iannucci@chromium.org

Recipe-Tryjob-Bypass-Reason: Autoroller
Bugdroid-Send-Email: False
Change-Id: Ic5ee3e2ff92fe373e8a746201ef2b1f2165059db
Reviewed-on: https://chromium-review.googlesource.com/555332Reviewed-by: Recipe Roller <recipe-roller@chromium.org>
Commit-Queue: Recipe Roller <recipe-roller@chromium.org>

infra/config/recipes.cfg

@@ -15,7 +15,7 @@
   "deps": {
     "recipe_engine": {
       "branch": "master",
-      "revision": "097a0dbe9f6b8eae39e690de848aea5c3d8ea38b",
+      "revision": "49d884b8bf92c358eab83cf2da43ef9863a89bbb",
       "url": "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
     }
   },