use the test name in the -D string for each name server
A request from @ckb: this adds the test name to the -D string used when launching named in system tests. That way if a server hangs, you can tell from "ps" which test it was:
each 41336 1925 1 11:13 pts/15 00:00:00 /home/each/isc/bind9/bin/named/named -D acl-ns2 -X named.lock -m record,size,mctx -T clienttest -c named.conf -d 99 -g -U 4
IMHO it doesn't need a CHANGES note.