9697 Add digest tests to crypto test framework

@@ -9,12 +9,14 @@
 # http://www.illumos.org/license/CDDL.
 #
 
 #
 # Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
+# Copyright 2018, Joyent, Inc.
 #
 
-SUBDIRS = modes common
+SUBDIRS = modes common digest
 
 modes: common
+digest: common
 
 include $(SRC)/test/Makefile.com