shared: FileCopy should also keep owner
shared: FileCopy should also keep owner

Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>

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