Dut: Nocturne.
Host: chromeos15-row14b-rack10-host8

https://screenshot.googleplex.com/8J2c2RPRypu

logs are present at https://stainless.corp.google.com/browse/chromeos-autotest-results/268714635-chromeos-test/

From debug logs:
=========================================================================
2/19 09:37:50.408 DEBUG|             utils:0287| [stdout] 2 packets transmitted, 0 received, 100% packet loss, time 999ms
12/19 09:37:50.408 DEBUG|             utils:0287| [stdout] 
12/19 09:37:50.408 INFO |        server_job:0217| 	END FAIL	----	suspend	timestamp=1545241070	localtime=Dec 19 09:37:50	DUT is not responding after 90 seconds
  Traceback (most recent call last):
    File "/usr/local/autotest/server/server_job.py", line 964, in run_op
      op_func()
    File "/usr/local/autotest/server/hosts/remote.py", line 217, in suspend
      "DUT is not responding after %d seconds" % (time_counter))
  AutoservSuspendError: DUT is not responding after 90 seconds
12/19 09:38:17.347 ERROR|             utils:0287| [stderr] ssh: connect to host chromeos15-row14b-rack10-host8 port 22: Connection timed out
12/19 09:38:17.348 DEBUG|          ssh_host:0234| retry 2: restarting master connection
12/19 09:38:17.348 DEBUG|      abstract_ssh:0821| Restarting master ssh connection
12/19 09:38:17.348 INFO |     ssh_multiplex:0096| Starting master ssh connection '/usr/bin/ssh -a -x -N -o ControlMaster=yes -o ControlPath=/tmp/_autotmp_vaxUayssh-master/socket -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o ConnectTimeout=30 -o ServerAliveInterval=900 -o ServerAliveCountMax=3 -o ConnectionAttempts=4 -o Protocol=2 -l root -p 22 chromeos15-row14b-rack10-host8'
12/19 09:38:17.349 DEBUG|             utils:0219| Running '/usr/bin/ssh -a -x -N -o ControlMaster=yes -o ControlPath=/tmp/_autotmp_vaxUayssh-master/socket -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o ConnectTimeout=30 -o ServerAliveInterval=900 -o ServerAliveCountMax=3 -o ConnectionAttempts=4 -o Protocol=2 -l root -p 22 chromeos15-row14b-rack10-host8'
12/19 09:38:47.202 ERROR|             utils:2770| Timed out waiting for condition: Wait for a socket file to exist
12/19 09:38:47.202 INFO |     ssh_multiplex:0113| Timed out waiting for master-ssh connection to be established.
12/19 09:39:50.403 ERROR|             utils:0287| [stderr] ssh: connect to host chromeos15-row14b-rack10-host8 port 22: Connection timed out
12/19 09:39:51.405 DEBUG|      abstract_ssh:0684| Host chromeos15-row14b-rack10-host8 is still down after waiting 221 seconds
12/19 09:39:51.405 DEBUG|              test:0381| Test failed due to client failed to resume from sleep after 200 seconds. Exception log follows the after_iteration_hooks.
12/19 09:39:51.405 DEBUG|              test:0386| Starting after_iteration_hooks for platform_ExternalUsbPeripherals.detect.crash_check_short
12/19 09:39:51.406 DEBUG|              test:0391| after_iteration_hooks completed
12/19 09:39:51.406 WARNI|              test:0606| The test failed with the following exception
Traceback (most recent call last):
  File "/usr/local/autotest/client/common_lib/test.py", line 600, in _exec
    _call_test_function(self.execute, *p_args, **p_dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 800, in _call_test_function
    return func(*args, **dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 464, in execute
    postprocess_profiled_run, args, dargs)
  File "/usr/local/autotest/client/common_lib/test.py", line 371, in _call_run_once
    self.run_once(*args, **dargs)
  File "/usr/local/autotest/server/site_tests/platform_ExternalUsbPeripherals/platform_ExternalUsbPeripherals.py", line 338, in run_once
    self.action_resume(boot_id)
  File "/usr/local/autotest/server/site_tests/platform_ExternalUsbPeripherals/platform_ExternalUsbPeripherals.py", line 123, in action_resume
    self.host.test_wait_for_resume(boot_id, _LONG_TIMEOUT)
  File "/usr/local/autotest/server/hosts/cros_host.py", line 1383, in test_wait_for_resume
    resume_timeout)
TestFail: client failed to resume from sleep after 200 seconds
12/19 09:39:51.406 DEBUG|              test:0611| Running cleanup for test.
=======================================================================

Note: This issue is specific to M73 builds. Tests are passing on M71&M72



AIs:
-- Try to reproduce manually on M73 build.