Comment 24 for bug 1675088

Scoping any further remediation work for 20.04 cycle.

Permissions snippet from postinst should look something like:

    chown -R aodh:adm /var/log/aodh
    chmod 0750 /var/log/aodh
    chown -R root:aodh /etc/aodh
    chmod 0750 /etc/aodh
    chown -R aodh:aodh /var/lib/aodh