[libvirt] Possible documentation enhancement

Hi, I just wanted to add hooks on a node and didn't succeed. The error message was: Hook script execution failed: Hook script /etc/libvirt/hooks/qemu qemu failed with error code 256:libvir: error : cannot execute binary /etc/libvirt/hooks/qemu: Permission denied After reading the whole relevant src/utils code without finding any reason for this, I found out that it was apparmor's fault. So maybe there's a profile for the hooks missing (at least in ubuntu's packaging). And maybe there's room in the hook-docs for a hint about that. Daniel