hg: jdk9/dev/jaxp: 8162666: Mark ValidationWarningsTest.java as intermittently failing

[joe.darcy at oracle.com]

Changeset: d92c3b89b2ac
Author:    darcy
Date:      2016-07-27 15:35 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/jaxp/rev/d92c3b89b2ac

8162666: Mark ValidationWarningsTest.java as intermittently failing
Reviewed-by: lancea

! test/TEST.ROOT
! test/javax/xml/jaxp/unittest/common/ValidationWarningsTest.java