RFR 9: JDK-8170828: test/java/util/zip/ZipFile/TestZipFile needs @modules to work with Method.setAccessible()

[Xueming Shen]

Hi,

Please help review the change for #8170828
issue: https://bugs.openjdk.java.net/browse/JDK-8170828
webrev: http://cr.openjdk.java.net/~sherman/8170828

The offending test case started to fail because the new @modules: 
xxx:open tag
is missing for it to access java.base private method.

Thanks,
Sherman