[9] RFR: 8048624: Tests for SealedObject

[Rajan Halade]

May I request you to review two new tests added to check SealedObject 
with different ciphers.

Bug: https://bugs.openjdk.java.net/browse/JDK-8048624
Webrev: http://cr.openjdk.java.net/~rhalade/8048624/webrev/
Thanks,
Rajan