[JDK-9] RFR: JDK-8048617: Tests for PKCS12 read operations

[zaiyao liu]

Hi Xuelei,

May I request you to review 1 new test to be added for PKCS12 read 
operations. New test are added to address following:
- Implement tests for read operations with PKCS12 keystore.
JDK Issue:***https://bugs.openjdk.java.net/browse/JDK-8048617*
Webrev: http://cr.openjdk.java.net/~tyan/kevin/JDK-8048617/webrev01/

Thanks,

Kevin