There is no validation when creating a NAD name from Network Edit/Add modal

4.20

always

1.in the select type invalid NAD name i.e. foo/not.valid
2.use that name to create an option in the dropdown
3.use that option for the created network

the network is created but the VM cannot be started as it's not possible to create such NAD - failing condition is
message: 'failed to render launch manifest: failed to locate network attachment definition foo/not.valid.name'      
reason: FailedCreate      
status: 'False'      
type: Synchronized

invalid name is blocked at creation time