nsupdate: use FIPS compatible algorithms

HMACMD5 is not permitted in FIPS mode, use HMACSHA256 instead.

bin/tests/system/nsupdate/tests.sh

@@ -985,7 +985,7 @@ fi
 n=$((n + 1))
 ret=0
 echo_i "check TSIG key algorithms (nsupdate -y) ($n)"
-for alg in md5 sha1 sha224 sha256 sha384 sha512; do
+for alg in $ALGS; do
     secret=$(sed -n 's/.*secret "\(.*\)";.*/\1/p' ns1/${alg}.key)
     $NSUPDATE -y "hmac-${alg}:${alg}-key:$secret" <<END > /dev/null || ret=1
 server 10.53.0.1 ${PORT}
@@ -994,7 +994,7 @@ send
 END
 done
 sleep 2
-for alg in md5 sha1 sha224 sha256 sha384 sha512; do
+for alg in $ALGS; do
     $DIG $DIGOPTS +short @10.53.0.1 ${alg}.keytests.nil | grep 10.10.10.50 > /dev/null 2>&1 || ret=1
 done
 if [ $ret -ne 0 ]; then