Neutron agent processes launched in containers are failing with
"Error: relabel failed "/var/lib/neutron": \
SELinux relabeling of /var/lib/neutron is not allowed"
Possibly related prior patch:
https://review.opendev.org/#/c/626546/
Change-Id: Ifc7d0cb79214da44d9cd12481f010e2d7d325aa6
Related-Bug: #1881146
(cherry picked from commit 3fa8c735ae)