hg: jigsaw/jake/hotspot: Move jtreg required version to 4.2 b02

[alan.bateman at oracle.com]

Changeset: b9e8f89afb74
Author:    alanb
Date:      2016-04-29 08:34 +0100
URL:       http://hg.openjdk.java.net/jigsaw/jake/hotspot/rev/b9e8f89afb74

Move jtreg required version to 4.2 b02

! test/TEST.ROOT