[AW NS] Update filter, use dots instead of #.

Update filter to use "." everywhere and make sure the tests
are actually picked up by the bots.

Cq-Include-Trybots: master.tryserver.chromium.android:android_mojo
TBR=tobiasjs@chromium.org
NOTRY=true

Change-Id: I04c8cd4a353d5c1e8cde90339efacddb7aa09091
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1511413
Reviewed-by: Tim Volodine <timvolodine@chromium.org>
Commit-Queue: Tim Volodine <timvolodine@chromium.org>
Auto-Submit: Tim Volodine <timvolodine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638980}

testing/buildbot/filters/mojo.fyi.network_webview_instrumentation_test_apk.filter

@@ -43,8 +43,8 @@
 
 # Flaky tests on android_mojo and android_mojo_rel bots
 # https://crbug.com/936757, https://crbug.com/939355
--org.chromium.android_webview.test.AwContentsClientFullScreenTest#testOnShowCustomViewAndPlayWithHtmlControl_videoInsideDiv
--org.chromium.android_webview.test.AwContentsClientFullScreenTest#testPowerSaveBlockerIsEnabledDuringEmbeddedPlayback
--org.chromium.android_webview.test.AwContentsClientFullScreenTest#testPowerSaveBlockerIsTransferredToEmbedded
--org.chromium.android_webview.test.AwContentsClientFullScreenTest#testPowerSaveBlockerIsTransferredToFullscreen
--org.chromium.android_webview.test.AwContentsClientFullScreenTest#testPowerSaveBlockerIsEnabledDuringFullscreenPlayback_videoInsideDiv
+-org.chromium.android_webview.test.AwContentsClientFullScreenTest.testOnShowCustomViewAndPlayWithHtmlControl_videoInsideDiv
+-org.chromium.android_webview.test.AwContentsClientFullScreenTest.testPowerSaveBlockerIsEnabledDuringEmbeddedPlayback
+-org.chromium.android_webview.test.AwContentsClientFullScreenTest.testPowerSaveBlockerIsTransferredToEmbedded
+-org.chromium.android_webview.test.AwContentsClientFullScreenTest.testPowerSaveBlockerIsTransferredToFullscreen
+-org.chromium.android_webview.test.AwContentsClientFullScreenTest.testPowerSaveBlockerIsEnabledDuringFullscreenPlayback_videoInsideDiv