lxd/logs: Don't allow removing lxc.conf or lxc.log
lxd/logs: Don't allow removing lxc.conf or lxc.log

Those files are used by the container runtime.

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>

hallyn/lxd,stgraber/lxd,hallyn/lxd,erikmack/lxd,hallyn/lxd,pcdummy/lxd,jsavikko/lxd,erikmack/lxd,atxwebs/lxd,atxwebs/lxd,mjeanson/lxd,hallyn/lxd,jsavikko/lxd,hallyn/lxd,lxc/lxd,pcdummy/lxd,lxc/lxd,lxc/lxd,stgraber/lxd,jsavikko/lxd,pcdummy/lxd,stgraber/lxd,lxc/lxd,Skarlso/lxd,atxwebs/lxd,stgraber/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd,erikmack/lxd,hallyn/lxd,Skarlso/lxd,mjeanson/lxd,atxwebs/lxd,lxc/lxd,Skarlso/lxd,lxc/lxd,mjeanson/lxd,stgraber/lxd,Skarlso/lxd