hg: jdk/submit: Extends timeout value in TestJhsdbJstackMixed and ClhsdbPstack

[suenaga at oss.nttdata.com]

Changeset: 308e214cc03a
Author:    ysuenaga
Date:      2019-11-23 18:11 +0900
URL:       https://hg.openjdk.java.net/jdk/submit/rev/308e214cc03a

Extends timeout value in TestJhsdbJstackMixed and ClhsdbPstack

! test/hotspot/jtreg/serviceability/sa/ClhsdbPstack.java
! test/hotspot/jtreg/serviceability/sa/TestJhsdbJstackMixed.java