network: Validate interface names
network: Validate interface names

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

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