Added otp, nonce in all responses for protocol >= 2.0. 
Added otp, nonce in all responses for protocol >= 2.0. 


ahojjati/yubikey-val,Yubico/yubikey-val,Yubico/yubikey-val,ahojjati/yubikey-val,Yubico/yubikey-val,ahojjati/yubikey-val