RFR for JDK-8048604 : Tests for strong crypto ciphers

[Tristan Yan]

Please be free review these new tests for strong crypto ciphers.

webrev : http://cr.openjdk.java.net/~tyan/8048604/webrev.01/
bug    : https://bugs.openjdk.java.net/browse/JDK-8048604

Thank you very much
Tristan