cheets_CTS_N: disable max_retry on kahlee

Kahlee is currently unable to get through a CTS run because all of the
retries take longer than the 3.5 day timeout.  Most of these failures
are deterministic.  Disable retries temporarily so we can triage and
address enough of these failures to worry about flaky tests.

BUG=b:65412156
TEST=test_that -b kahlee dut cheets_CTS_N.x86.CtsOsTestCases

Change-Id: Iee887f00b1d7e2d2b379fd196710324747afe30c
Reviewed-on: https://chromium-review.googlesource.com/773201
Commit-Ready: Benjamin Gordon <bmgordon@chromium.org>
Tested-by: Benjamin Gordon <bmgordon@chromium.org>
Reviewed-by: Ilja H. Friedel <ihf@chromium.org>
(cherry picked from commit 0a6eee58c7ab8aaa3423ef3997ccac2dce7b34d5)
Reviewed-on: https://chromium-review.googlesource.com/801173
Tested-by: Ilja H. Friedel <ihf@chromium.org>
diff --git a/server/site_tests/cheets_CTS_N/cheets_CTS_N.py b/server/site_tests/cheets_CTS_N/cheets_CTS_N.py
index 774a4f8..6a69b77 100644
--- a/server/site_tests/cheets_CTS_N/cheets_CTS_N.py
+++ b/server/site_tests/cheets_CTS_N/cheets_CTS_N.py
@@ -34,7 +34,8 @@
     """Sets up tradefed to run CTS tests."""
     version = 1
 
-    _BOARD_RETRY = {'betty': 0}
+    # TODO(bmgordon): Remove kahlee once the bulk of failing tests are fixed.
+    _BOARD_RETRY = {'betty': 0, 'kahlee': 0}
     _CHANNEL_RETRY = {'dev': 5, 'beta': 5, 'stable': 5}
 
     def _get_default_bundle_url(self, bundle):