8286744: failure_handler: dmesg command on macos fails to collect data due to permission issues

Reviewed-by: dfuchs, lancea, lmesnik

Author: jaikiran

test/failure_handler/src/share/conf/mac.properties

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2015, 2021, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2015, 2022, 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
@@ -103,7 +103,9 @@ ulimit.app=bash
 ulimit.args=-c\0ulimit -a
 ulimit.args.delimiter=\0
 
-system.dmesg.app=dmesg
+system.dmesg.app=sudo
+system.dmesg.args=dmesg
+
 system.sysctl.app=sysctl
 system.sysctl.args=-a