lxd/daemon: convert storage errors to LogError*()
lxd/daemon: convert storage errors to LogError*()

Signed-off-by: Christian Brauner <48455ab3070520a2d174545c7239d6d0fabd9a83@canonical.com>

chrisglass/lxd,Skarlso/lxd,techtonik/lxd,atxwebs/lxd,lxc/lxd,georghopp/lxd,hallyn/lxd,akshaykarle/lxd,atxwebs/lxd,lxc/lxd,ollie314/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd,pcdummy/lxd,ollie314/lxd,hallyn/lxd,lxc/lxd,jsavikko/lxd,stgraber/lxd,lxc/lxd,erikmack/lxd,Skarlso/lxd,pcdummy/lxd,ollie314/lxd,jsavikko/lxd,mjeanson/lxd,stgraber/lxd,hallyn/lxd,erikmack/lxd,lxc/lxd,hallyn/lxd,atxwebs/lxd,akshaykarle/lxd,jsavikko/lxd,techtonik/lxd,hallyn/lxd,mjeanson/lxd,Skarlso/lxd,stgraber/lxd,erikmack/lxd,georghopp/lxd,mjeanson/lxd,techtonik/lxd,chrisglass/lxd,chrisglass/lxd,georghopp/lxd,stgraber/lxd,hallyn/lxd,stgraber/lxd,akshaykarle/lxd,pcdummy/lxd,Skarlso/lxd,atxwebs/lxd,lxc/lxd