[v9_9] support all algorithms in ddns-confgen

3431.	[bug]		ddns-confgen: Some valid key algorithms were
			not accepted. [RT #31927]
(cherry picked from commit de5890da9b)

bin/tests/system/nsupdate/tests.sh

@@ -484,5 +484,24 @@ if [ $ret -ne 0 ]; then
     status=1
 fi
 
+n=`expr $n + 1`
+ret=0
+echo "I:check TSIG key algorithms ($n)"
+for alg in md5 sha1 sha224 sha256 sha384 sha512; do
+    $NSUPDATE -k ns1/${alg}.key <<END > /dev/null || ret=1
+server 10.53.0.1 5300
+update add ${alg}.keytests.nil. 600 A 10.10.10.3
+send
+END
+done
+sleep 2
+for alg in md5 sha1 sha224 sha256 sha384 sha512; do
+    $DIG +short @10.53.0.1 -p 5300 ${alg}.keytests.nil | grep 10.10.10.3 > /dev/null 2>&1 || ret=1
+done
+if [ $ret -ne 0 ]; then
+    echo "I:failed"
+    status=1
+fi
+
 echo "I:exit status: $status"
 exit $status