Changes to Register a node.

added the new optional request property bootId

added the new optional request property csrPem

added the new optional request property diskCordonedAt

added the new optional request property reservedDiskGb

added the new optional request property smolvmVersion

added the optional property bootId to the response with the 200 status

added the optional property csrPem to the response with the 200 status

added the optional property diskCordonedAt to the response with the 200 status

added the optional property reservedDiskGb to the response with the 200 status

added the optional property smolvmVersion to the response with the 200 status