hg: jdk/jdk: 8232207: Linux os::available_memory re-reads cgroup configuration on every invocation

[claes.redestad at oracle.com]

Changeset: 21a92562f0c2
Author:    redestad
Date:      2019-10-17 00:19 +0200
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/21a92562f0c2

8232207: Linux os::available_memory re-reads cgroup configuration on every invocation
Reviewed-by: bobv, sgehwolf

! src/hotspot/os/linux/osContainer_linux.cpp
! src/hotspot/os/linux/osContainer_linux.hpp