/var/log/libvirt/qemu/*.log is never rotated

[Takashi Kajinami]

Description
===========
This was initially reported in https://bugzilla.redhat.com/show_bug.cgi?id=1972556

Currently, libvirt-daemon-driver-qemu is not installed in overcloud image.
Because of that /etc/logrotate.d/libvirtd is not created in overcloud nodes and logs under /var/log/libvirt/qemu are never rotated.
This means that the file can grow for example when many stop/start operation is executed.

In addition, the file is never purged even after the instance is deleted. Because nova assigns a different id for each instances
this would result in huge number of log files left.

Steps to reproduce
==================
* Deploy overcloud
* Create and delete some instances
* Check files under /var/log/libvirt/qemu/*.log in compute nodes after several days

Expected result
===============
Files are rotated and delete automatically

Actual result
=============
These files are never rotated

Environment
===========
The problem was initially found in stable/train deployment but the same situation is observed in master.

Logs & Configs
==============
N/A