Disable all PolicyDeviceDisplayResolution tests for mash.

There are still some failing, so instead of filtering many individual
tests, filter them all.

TBR=jamescook@chromium.org
BUG=831826

Change-Id: I42236102982a270917c96c6a9c030b6bd029543f
Reviewed-on: https://chromium-review.googlesource.com/c/1394392Reviewed-by: Evan Stade <estade@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#619677}

testing/buildbot/filters/chromeos.mash.fyi.browser_tests.filter

@@ -142,22 +142,7 @@
 # ash::Shell::display_manager() to get display state.
 # http://crbug.com/831826
 -PolicyTest.UnifiedDesktopEnabledByDefault
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionRecommendedTest.Internal/0
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionRecommendedTest.Internal/1
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionRecommendedTest.Internal/2
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionRecommendedTest.ResizeExternalDisplay/0
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionRecommendedTest.ResizeExternalDisplay/1
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.ConnectExternalDisplay/0
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.ConnectExternalDisplay/1
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.ConnectExternalDisplay/2
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.Internal/0
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.Internal/1
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.Internal/2
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.ResizeExternalDisplay/1
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.ResizeExternalDisplay/2
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.SetAndUnsetPolicy/1
--PolicyDeviceDisplayResolution/DeviceDisplayResolutionTest.SetAndUnsetPolicy/2
--PolicyDeviceDisplayResolution/DisplayResolutionBootTest.*
+-PolicyDeviceDisplayResolution/*
 
 # Kiosk mode has a variety of failures:
 # termination_observer_->terminated() is false.