Roll recipe dependencies (MANUAL).

Additions:
  * Remove PYTHONUNBUFFERED for svn tests

This obviates https://codereview.chromium.org/2298863002/.

recipe_engine:
  https://crrev.com/09345f9dcf4d2744f66d64766fd349ddf04f04ce Cancel PYTHONUNBUFFERED when unbuffered is explicitly set to False (iannucci@chromium.org)

TBR=martiniss@chromium.org, phajdan.jr@chromium.org
BUG=635641

Review-Url: https://codereview.chromium.org/2298893002

infra/config/recipes.cfg

@@ -5,5 +5,5 @@ deps {
   project_id: "recipe_engine"
   url: "https://chromium.googlesource.com/external/github.com/luci/recipes-py.git"
   branch: "master"
-  revision: "a93ebc8b69c18bce873f4df1979b6534f3c13e68"
+  revision: "09345f9dcf4d2744f66d64766fd349ddf04f04ce"
 }

tests/test-lib.sh

@@ -8,6 +8,7 @@
 set -e
 
 export DEPOT_TOOLS_UPDATE=0
+export PYTHONUNBUFFERED=
 
 PWD=$(pwd)
 REPO_URL=file://$PWD/svnrepo