Path cleaning for cgroups

[Mossaka]

          is there any concern about resolving symlinks or relative paths via canonicalize here?

Originally posted by @jsturtevant in #254 (comment)

[github-actions]

This issue is stale because it has been open 90 days with no activity. This issue will be closed in 7 days unless new comments are made or the stale label is removed.

[github-actions]

This issue was closed because it has been stalled for 7 days with no activity.