RFR: JDK-8201513: nsk/jvmti/IterateThroughHeap/filter-* are broken

[Alex Menkov]

Hi all,

please review a fix for
https://bugs.openjdk.java.net/browse/JDK-8201513
webrev:
http://cr.openjdk.java.net/~amenkov/IterateThroughHeap/webrev/

summary:
The tests had a error which was fixed during open-sourcing.
After that the tests started to fail. Root cause of the failures is 
wrong verification (positive results are interpreted as negative)

--alex