8181439: Test the jdk.tls.namedGroups System Property

Reviewed-by: valeriep

test/sun/security/ssl/com/sun/net/ssl/internal/ssl/DHKeyExchange/UseStrongDHSizes.java

@@ -33,6 +33,7 @@
  * @library /javax/net/ssl/templates
  * @summary Negotiated Finite Field Diffie-Hellman Ephemeral Parameters for TLS
  * @run main/othervm UseStrongDHSizes 2048
+ * @run main/othervm -Djdk.tls.namedGroups=ffdhe2048 UseStrongDHSizes 2048
  */
 
 import java.io.InputStream;