Roll src/tools/swarming_client/ f71d1a3fb..6e5d2b21f (2 commits) and tools/luci-go.

DEPS

 # This file is used to manage the dependencies of the Chromium src repo. It is
 # used by gclient to determine what version of each dependency to check out, and
 # where.
 #
 # For more information, please refer to the official documentation:
 #   https://sites.google.com/a/chromium.org/dev/developers/how-tos/get-the-code
 #
 # When adding a new dependency, please update the top-level .gitignore file
 # to list the dependency's destination directory.
 #
@@ skipping 24 matching lines @@
   'libvpx_revision': '70db2235b7e389f4d1b178320ebce76280c127af',
   'sfntly_revision': '1bdaae8fc788a5ac8936d68bf24f37d977a13dac',
   'skia_revision': '044284bba30411559c68f840aa8b7e83e77ff620',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.
   'v8_revision': 'c63779d2ec7f2f20c03d69f1959bd22cf6d6c375',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
-  'swarming_revision': 'f71d1a3fbe207d91bb2f0bd96c8821ff90bb7c28',
+  'swarming_revision': '6e5d2b21f0ac98396cd736097a985346feed1328',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.
   'angle_revision': 'c5b2ba53591c98d5f1c539dc8fcab6f76cc6318e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling build tools
   # and whatever else without interference from each other.
   'buildtools_revision': 'f7310ee61725e68b1c8921e381830362cf4f0999',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
@@ skipping 747 matching lines @@
     # migration completes (let's say Sep 1 2014).
     'name': 'check_git_config',
     'pattern': '.',
     'action': [
         'python',
         'src/tools/check_git_config.py',
         '--running-as-hook',
     ],
   },
 ]