Roll src/third_party/catapult/ 863250f04..3d7a0942b (1 commit).

https://chromium.googlesource.com/external/github.com/catapult-project/catapult.git/+log/863250f040be..3d7a0942bcf4

$ git log 863250f04..3d7a0942b --date=short --no-merges --format='%ad %ae %s'
2016-09-15 dtu Fix utils.ServiceAccountHttp().

TBR=catapult-sheriff@chromium.org

Review-Url: https://codereview.chromium.org/2347103002
Cr-Commit-Position: refs/heads/master@{#419099}

DEPS

@@ -92,7 +92,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling catapult
   # and whatever else without interference from each other.
-  'catapult_revision': '863250f040be745de1b273a53c430c1a0d18ea8b',
+  'catapult_revision': '3d7a0942bcf44f2f94cf605c14fb4c209d1fff14',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling libFuzzer
   # and whatever else without interference from each other.