hg: jdk9/sandbox/jdk: 8144880: Instrument intermittently failing test ConfigChanges.java

[chris.hegarty at oracle.com]

Changeset: a333d6e4f1e9
Author:    darcy
Date:      2015-12-07 14:12 -0800
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/a333d6e4f1e9

8144880: Instrument intermittently failing test ConfigChanges.java
Reviewed-by: lancea, martin

! test/TEST.groups
! test/java/util/concurrent/ThreadPoolExecutor/ConfigChanges.java