Authentication type of DCP instance authentication. The
enumeration 'hmac-sha256(1)' represents the password is sent after
being encrypted through hmac-sha256. By default, authentication is
not configured. If this object is not configured and object
'hwIpfpmDcpAuthType' is configured, then this instance uses
'hwIpfpmDcpInstAuthType' and 'hwIpfpmDcpInstAuthKey'
as its authentication.