Flaky test: CtsDisplayTestCases android.display.cts.DisplayTest#testActivityContextGetMetrics

Add another assertion to see why the test is failing
Add the test to known failures

Bug: 208909067
Test: atest CtsDisplayTestCases:android.display.cts.DisplayTest#testActivityContextGetMetrics -- --abi armeabi-v7a
Change-Id: Ib116c87e21eb09aad2711f665b9f2ea12085c232
Merged-In: Ib116c87e21eb09aad2711f665b9f2ea12085c232
diff --git a/tools/cts-tradefed/res/config/cts-known-failures.xml b/tools/cts-tradefed/res/config/cts-known-failures.xml
index f8b05bf..0525281 100644
--- a/tools/cts-tradefed/res/config/cts-known-failures.xml
+++ b/tools/cts-tradefed/res/config/cts-known-failures.xml
@@ -275,4 +275,7 @@
     <option name="compatibility:exclude-filter" value="CtsMonkeyTestCases com.android.cts.monkey.CategoryTest#testSingleCategory" />
     <option name="compatibility:exclude-filter" value="CtsMonkeyTestCases com.android.cts.monkey.CategoryTest#testMultipleCategories" />
 
+    <!-- b/208909067 -->
+    <option name="compatibility:exclude-filter" value="CtsDisplayTestCases android.display.cts.DisplayTest#testActivityContextGetMetrics" />
+
 </configuration>