Update contrib/check-config.sh to check for CGROUP_FREEZER and to use /proc/mounts Upstream-commit: 5ff3a28cb4955b5d933c17d0d9c6f8f0b6267d7d Component: engine
Update contrib/check-config.sh to check for CGROUP_FREEZER and to use /proc/mounts Upstream-commit: 5ff3a28cb4955b5d933c17d0d9c6f8f0b6267d7d Component: engine