RFR(XS): JDK-8055053: [TESTBUG] runtime/NMT/VirtualAllocCommitUncommitRecommit.java fails

[George Triantafillou]

Please review this test fix for 8055053.  The shouldNotMatch condition 
was modified to match on "reserved 1024KB for Test".

Webrev: http://cr.openjdk.java.net/~gtriantafill/8055053/webrev/ 
<http://cr.openjdk.java.net/%7Egtriantafill/8055053/webrev/>
Bug: https://bugs.openjdk.java.net/browse/JDK-8055053

The fix was tested locally on Linux for 1000 iterations.

Thanks.

-George