git: openjdk/jdk8u-dev: 8253797: [cgroups v2] Account for the fact that swap accounting is disabled on some systems

[Jonathan Dowland]

Changeset: b2619cf5
Author:    Jonathan Dowland <jdowland at openjdk.org>
Date:      2022-12-15 18:22:37 +0000
URL:       https://git.openjdk.org/jdk8u-dev/commit/b2619cf5338fcc536aaa161e44f352e3578513ea

8253797: [cgroups v2] Account for the fact that swap accounting is disabled on some systems

Backport-of: 669361117d30c9904813b6f728714f8d6abe8484

! jdk/src/linux/classes/jdk/internal/platform/cgroupv2/CgroupV2Subsystem.java
! jdk/test/lib/jdk/test/lib/containers/cgroup/MetricsTesterCgroupV2.java