hg: shenandoah/jdk: Test @requires should check what GC is enabled at runtime

[shade at redhat.com]

Changeset: 3685cdb424de
Author:    shade
Date:      2018-11-30 17:09 +0100
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/3685cdb424de

Test @requires should check what GC is enabled at runtime

! test/hotspot/jtreg/gc/TestFullGCCount.java
! test/hotspot/jtreg/gc/shenandoah/options/TestEnabled.java
! test/hotspot/jtreg/serviceability/sa/ClhsdbJhisto.java
! test/hotspot/jtreg/serviceability/sa/TestHeapDumpForLargeArray.java