[Data Mover] Payload misalignment / corruption on larger data migrations

[nsarras]

Multiple clients sending data to same socket on master end eventually leading to data getting misaligned. Client response is in json format w/ fixed sized header (x # of bytes). On master side it reads the header, then tries to read the payload. After large amounts of data is uploaded misinterpreting of the payload appears. Issue specifically occurs when clients send status to the monitor status poller on master.