Configure NethServer as an OpenVPN net2net client

I have successfully connect Zentyal (as Server) + NS (as Client)
@alefattorini @filippo_carletti @davidep @giacomo
We need to add new field to VPN Client mode :

# Verify server certificate by common name
verify-x509-name (server CN name) name

without this Zenyal and NS could not connetc to each other.
Please share your thoughts regarding this matter.