XXXX Add ZFS test for illumos 4986

@@ -23,10 +23,11 @@
         refquota_002_pos \
         refquota_003_pos \
         refquota_004_pos \
         refquota_005_pos \
         refquota_006_neg \
+        refquota_007_pos \
         setup
 
 CMDS = $(PROGS:%=$(TESTDIR)/%)
 $(CMDS) := FILEMODE = 0555