Allow slurm to enforce limits on resources

[enasca]

Can only be merged after #130

[enasca]

slurmd fails to start after this change. Investigating.

[enasca]

With CgroupAutomount=yes in cgroup.conf, I get

[2023-02-14T13:57:51.852] debug2: _file_read_content: unable to open '/sys/fs/cgroup/memory//release_agent' for reading : No such file or directory
[2023-02-14T13:57:51.852] debug2: xcgroup_get_param: unable to get parameter 'release_agent' for '/sys/fs/cgroup/memory/'
[2023-02-14T13:57:51.887] error: unable to mount memory cgroup namespace: Device or resource busy

in the slurmd log. Without CgroupAutomount=no, it becomes

[2023-02-14T13:59:21.441] debug2: _file_read_content: unable to open '/sys/fs/cgroup/memory//release_agent' for reading : No such file or directory
[2023-02-14T13:59:21.441] debug2: xcgroup_get_param: unable to get parameter 'release_agent' for '/sys/fs/cgroup/memory/'
[2023-02-14T13:59:21.441] error: cgroup namespace 'memory' not mounted. aborting

A lookup in the slurm repo returns no results for release_agent, so I'm inclined to think that later versions of slurm have changed this section of the code and fixed our issue.