The corresponding patch has been merged in 2018 to kolla. I also checked, the ipmi plugin is included at least in the container image listed in fixed-in-version.
OSP13z12 ()[root@controller-0 /]# rpm -qa | grep ipmi collectd-ipmi-5.8.1-5.el7ost.x86_64 ()[root@controller-0 /]#
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:2738