named.conf: Add trailing dot to the fake_mname

Yet another trailing dot issue, but this one was kept hidden because
only the latest bind-dyndb-ldap package uses the fake_mname option.

install/share/bind.named.conf.template

@@ -34,7 +34,7 @@ dynamic-db "ipa" {
 	library "ldap.so";
 	arg "uri ldapi://%2fvar%2frun%2fslapd-$SERVER_ID.socket";
 	arg "base cn=dns, $SUFFIX";
-	arg "fake_mname $FQDN";
+	arg "fake_mname $FQDN.";
 	arg "auth_method sasl";
 	arg "sasl_mech GSSAPI";
 	arg "sasl_user DNS/$FQDN";