RFR 8181414/10, Refactor misc test/sun/net/www/protocol/jar shell tests to plain java tests

[Felix Yang]

Hi there,

    please review the patch to convert several shell tests to plain 
java tests.

Bug:

    https://bugs.openjdk.java.net/browse/JDK-8181414

Webrev:

    http://cr.openjdk.java.net/~xiaofeya/8181414/webrev.00/

Thanks,

Felix