[9] Review Request for 8074810: [TESTBUG] Please evaluate and perhaps fix some rather complex regression tests using internal API

[Semyon Sadetsky]

Hello,

Please review fix for JDK9:

bug: https://bugs.openjdk.java.net/browse/JDK-8074810
webrev: http://cr.openjdk.java.net/~ssadetsky/8074810/webrev.00/

The mentioned in the bug dependencies are eliminated.

--Semyon