8237869: exclude jtreg test security/infra/java/security/cert/CertPat…

…hValidator/certification/LuxTrustCA.java because of instabilities

Reviewed-by: clanger, mullan

test/jdk/ProblemList.txt

@@ -1,6 +1,6 @@
 ###########################################################################
 #
-# Copyright (c) 2009, 2019, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2009, 2020, Oracle and/or its affiliates. All rights reserved.
 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -687,6 +687,7 @@ sun/security/provider/KeyStore/DKSTest.sh                       8180266 windows-
 sun/security/pkcs11/KeyStore/SecretKeysBasic.sh                 8209398 generic-all
 
 security/infra/java/security/cert/CertPathValidator/certification/ActalisCA.java  8224768 generic-all
+security/infra/java/security/cert/CertPathValidator/certification/LuxTrustCA.java 8237888 generic-all
 
 sun/security/smartcardio/TestChannel.java                       8039280 generic-all
 sun/security/smartcardio/TestConnect.java                       8039280 generic-all