Changes to Add domain

the name request property's maxLength was set to 255

api operation id addDomain removed and replaced with create_domain

the endpoint scheme security APIKeyHeader was added to the API

added the non-success response with the status 401

added the non-success response with the status 403

added the non-success response with the status 422

added the non-success response with the status 500

the response property id became required for the status 201

the response property ip became required for the status 201

the response property name became required for the status 201

the response property status became required for the status 201