DO NOT MERGE Exclude testPermissionDiffCert from cts-known-failure.xml

Test: run cts -m [] -t []
Bug:121116786
Change-Id: Iff3dbd454b7e0547e3f33487e8912c632b1dd413
diff --git a/tools/cts-tradefed/res/config/cts-known-failures.xml b/tools/cts-tradefed/res/config/cts-known-failures.xml
index 48d1e8b..40cff00 100644
--- a/tools/cts-tradefed/res/config/cts-known-failures.xml
+++ b/tools/cts-tradefed/res/config/cts-known-failures.xml
@@ -282,4 +282,7 @@
 
     <!-- b/69277153 -->
     <option name="compatibility:exclude-filter" value="CtsSecurityHostTestCases android.security.cts.SELinuxHostTest#testNoExemptionsForSocketsBetweenCoreAndVendorBan" />
+
+    <!-- b/121116786 -->
+    <option name="compatibility:exclude-filter" value="CtsAppSecurityHostTestCases android.appsecurity.cts.AppSecurityTests#testPermissionDiffCert" />
 </configuration>