[autotest] Disable reporting_unittest.

Having moved over the new project hosting api we need to rewrite
the reporters unittests. To reduce code churn I'd rather we wait
till the first week before checking in a 'fixed' version, as I
expect most of the minor reporting module tweaks and changes to
happen by then.

BUG=chromium:249377
TEST=Ran the unittest_suite with and without reporting_unittest
     black listed and made sure it didn't run in the former case.

Change-Id: I9aa669f0dbd06f7dbe5dfd8fe8582efd14088bbe
Reviewed-on: https://gerrit.chromium.org/gerrit/58549
Tested-by: Prashanth Balasubramanian <beeps@chromium.org>
Reviewed-by: Aviv Keshet <akeshet@chromium.org>
Commit-Queue: Prashanth Balasubramanian <beeps@chromium.org>
diff --git a/utils/unittest_suite.py b/utils/unittest_suite.py
index 32af377..db27164 100755
--- a/utils/unittest_suite.py
+++ b/utils/unittest_suite.py
@@ -88,7 +88,9 @@
     'ap_configurator_test.py',
     'chaos_base_test.py',
     'chaos_interop_test.py',
-    'monitor_db_functional_test.py'
+    'monitor_db_functional_test.py',
+    # crbug.com/249377
+    'reporting_unittest.py',
     ))
 
 LONG_TESTS = (REQUIRES_MYSQLDB |