Review request for JDK-8051536: Convert JAXP function tests: javax.xml.parsers to jtreg(testng) tests

[Frank Yuan]

Hi, Joe and All

We are working on moving internal jaxp functional tests to open jdk repo.
This is the parsers suite. Would you please review these test?  Any comment
will be appreciated.

bug: https://bugs.openjdk.java.net/browse/JDK-8051536
webrev: http://cr.openjdk.java.net/~joehw/jdk9/test/Frank/8051536/webrev/


Thanks,

Frank