[8u] RFR 8242556: Cannot load RSASSA-PSS public key with non-null params from byte array

[Zhengyu Gu]

I would like to backport this to 8u for parity with Oracle 8u271.

The original patch does not apply cleanly. The only conflicts are 
copyright lines of PSSParametersTest.java and TestPSSKeySupport.java, 
where they are already up-to-date.

Original bug: https://bugs.openjdk.java.net/browse/JDK-8242556
Original patch: https://hg.openjdk.java.net/jdk/jdk/rev/9eea66de64df

8u Webrev: http://cr.openjdk.java.net/~zgu/JDK-8242556-8u/webrev.00/

Test:
   jdk_security


Thanks,

-Zhengyu