git: openjdk/jdk17u-dev: 8278951: containers/cgroup/PlainRead.java fails on Ubuntu 21.10

[Goetz Lindenmaier]

Changeset: ec1733da
Author:    Goetz Lindenmaier <goetz at openjdk.org>
Date:      2022-02-14 09:59:43 +0000
URL:       https://git.openjdk.java.net/jdk17u-dev/commit/ec1733dac673cf9aa0299469dd8a39046581f6b8

8278951: containers/cgroup/PlainRead.java fails on Ubuntu 21.10

Backport-of: 35172cdaf38d83cd3ed57a5436bf985dde2d802b

! src/hotspot/os/linux/cgroupSubsystem_linux.hpp
! src/hotspot/os/linux/cgroupV2Subsystem_linux.cpp