Pulls in a bugfix[0] that has been merged upstream[1].
This bug caused manually configured devfs_rulesets to get deleted on jail
stop, causing jails to come up with a default devfs rules on next start,
which can be a nuisance or even dangerous, depending on the specific setup.
Also adds a minimum devfs_ruleset id for dynamically created devfs rulesets
and fixes a devfs_ruleset resource leak when using plugins.
Take maintainership, as suggested by araujo@ (thanks for taking care of that
port for so long!).
[0]https://github.com/iocage/iocage/pull/1106
[1]753b2f3573
PR: 243510
Approved by: araujo (maintainer)
MFH: 2020Q1
755ddd458f