hg: jdk/sandbox: 8250627: Use -XX:+/-UseContainerSupport for enabling/disabling Java container metrics

[chris.hegarty at oracle.com]

Changeset: c9ad4de69c32
Author:    sgehwolf
Date:      2020-07-24 19:57 +0200
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/c9ad4de69c32

8250627: Use -XX:+/-UseContainerSupport for enabling/disabling Java container metrics
Reviewed-by: aph, dholmes, bobv

! make/hotspot/symbols/symbols-linux
! src/hotspot/share/include/jvm.h
! src/hotspot/share/prims/jvm.cpp
! src/java.base/linux/classes/jdk/internal/platform/CgroupMetrics.java
+ src/java.base/linux/native/libjava/CgroupMetrics.c
+ test/jdk/jdk/internal/platform/docker/CheckUseContainerSupport.java
+ test/jdk/jdk/internal/platform/docker/TestUseContainerSupport.java