Improve error reporting for connections terminated remotely.

[icorderi]

When a handshake status is not SUCCESS and the drive proceeds to terminate the connection the client returns Connection closed by peer instead of the error cause informed by the drive.

• A specific DeviceLocked error should be added.
• DEVICE_LOCKED is a valid status code on secure connections and does not cause the socket to be closed.
• A client should fail during connect() with DeviceLocked if the device returns status DEVICE_LOCKED and the connection is not secured.
• The generic RemoteError(STATUS_CODE) should be returned with any other status that is not SUCCESS.