hg: jdk/hs: 8196583: Update jib and test jtreg version to 4.2 b12

[paul.sandoz at oracle.com]

Changeset: 614c7e117327
Author:    psandoz
Date:      2018-02-01 11:24 -0800
URL:       http://hg.openjdk.java.net/jdk/hs/rev/614c7e117327

8196583: Update jib and test jtreg version to 4.2 b12
Reviewed-by: mchung, lfoltan

! make/conf/jib-profiles.js
! test/hotspot/jtreg/TEST.ROOT
! test/jaxp/TEST.ROOT
! test/jdk/TEST.ROOT
! test/langtools/TEST.ROOT
! test/nashorn/TEST.ROOT