Revert of [Telemetry] Set the number of attempts to retry a test if browser or tab crash to 1

tools/telemetry/telemetry/page/page_test.py

 # Copyright 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from telemetry.core import command_line
 from telemetry.page import test_expectations
 from telemetry.page.actions import action_runner as action_runner_module
 
 
 class Failure(Exception):
@@ skipping 115 matching lines @@
     return self._close_tabs_before_run
 
   @close_tabs_before_run.setter
   def close_tabs_before_run(self, close_tabs):
     self._close_tabs_before_run = close_tabs
 
   @property
   def attempts(self):
     """Maximum number of times test will be attempted."""
     # Do NOT override this method (crbug.com/422339).
-    return 1
+    return 3
 
   @property
   def max_failures(self):
     """Maximum number of failures allowed for the page set."""
     return self._max_failures
 
   @max_failures.setter
   def max_failures(self, count):
     self._max_failures = count
 
@@ skipping 158 matching lines @@
 
   def IsExiting(self):
     return self._exit_requested
 
   def RequestExit(self):
     self._exit_requested = True
 
   @property
   def action_name_to_run(self):
     return self._action_name_to_run