hg: jdk/jdk: 8208704: runtime/appcds/MultiReleaseJars.java timed out often in hs-tier7 testing

[calvin.cheung at oracle.com]

Changeset: 52fed262f009
Author:    ccheung
Date:      2018-08-07 09:44 -0700
URL:       http://hg.openjdk.java.net/jdk/jdk/rev/52fed262f009

8208704: runtime/appcds/MultiReleaseJars.java timed out often in hs-tier7 testing
Summary: increase timout to 2400 and reduce the amount of output
Reviewed-by: mseledtsov, jiangli

! test/hotspot/jtreg/runtime/appcds/MultiReleaseJars.java