Comment 4 for bug 1346703

This is caused by maas-cluster-controller's postinst script that runs the following, which changes the ownership :

    # Give appropriate permissions
    chown -R maas:maas /var/lib/maas/
    chown -R maas:maas /var/log/maas <<<
    chmod -R 775 /var/log/maas/oops