12370 mdb tests should be packaged

@@ -21,10 +21,11 @@
 
 # Copyright 2014 Gary Mills
 #
 # Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.
 # Copyright 2014 Garrett D'Amore <garrett@damore.org>
+# Copyright 2020 Joyent, Inc.
 #
 #
 # open-tree exception list
 #
 # See README.exception_lists for details

@@ -237,6 +238,5 @@
 
 #
 # ld tests which are not currently delivered
 #
 ./usr/src/cmd/sgs/test
-./usr/src/cmd/mdb/test