RFR: JDK-8189664: Stop producing ARCHIVE_BUNDLE.zip from test makefiles unless asked to

[Erik Joelsson]

In test/TestCommon.gmk the jtreg invocation will unconditionally produce 
an archive bundle, a zip file consisting of all the output from jtreg. 
When testing in JPRT, JPRT sets JPRT_ARCHIVE_BUNDLE to override the name 
of this zip. In all other situation, I can't see the point of creating 
it. It just adds unnecessary test execution time as well as bloating up 
the test results dir when we now save it using different means.

I propose to stop producing any zip file unless either ARCHIVE_BUNDLE or 
JPRT_ARCHIVE_BUNDLE is set by the user.

Webrev: http://cr.openjdk.java.net/~erikj/8189664/webrev.01/

Bug: https://bugs.openjdk.java.net/browse/JDK-8189664

/Erik