certificateMode
Describes the certificate mode in which the Certificate Authority (CA) will be registered. If the verificationCertificate field is not provided, set certificateMode to be SNI_ONLY. If the verificationCertificate field is provided, set certificateMode to be DEFAULT. When certificateMode is not provided, it defaults to DEFAULT. All the device certificates that are registered using this CA will be registered in the same certificate mode as the CA. For more information about certificate mode for device certificates, see certificate mode.