add tests for CNAME and CNAME return on A/AAAA

tests/README.md

@@ -83,6 +83,7 @@ $digcmd @$ns -p $port NS in-delegated.example.com
 #   should return records in ANSWER section, nothing else
 $digcmd @$ns -p $port A example.com
 $digcmd @$ns -p $port AAAA example.com
+$digcmd @$ns -p $port CNAME example.com
 $digcmd @$ns -p $port MX example.com
 $digcmd @$ns -p $port SRV example.com
 $digcmd @$ns -p $port TXT example.com
@@ -101,6 +102,8 @@ $digcmd @$ns -p $port NS doesntexist.example.com
 #   should return record of correct type in ANSWER section, nothing else
 $digcmd @$ns -p $port A a.example.com
 $digcmd @$ns -p $port AAAA aaaa.example.com
+$digcmd @$ns -p $port CNAME cname.example.com
+$digcmd @$ns -p $port A cname.example.com       # Special Case, should return CNAME record
 $digcmd @$ns -p $port MX mx.example.com
 $digcmd @$ns -p $port SRV srv.example.com
 $digcmd @$ns -p $port TXT txt.example.com