There are cases where it's necessary to start Ceph OSD
containers using numactl to avoid performance problems.
ceph-ansible can do this but because the numactl package
is missing from the overcloud image it will not work.
This change adds the package so it will work.
Change-Id: Id372ede01bef45cf3fcc686fccfa2344a4ae7aa8
Closes-Bug: #1819465