Changes

stream_cli: Allow setting nodelay sockopt after opening sock

This allows users who wish to first open the socket and set the nodelay
option at a later point.
This has also a use case according to man 7 tcp:
"""
setting this option forces an explicit flush of pending output,
even if TCP_CORK is currently set.
"""

Change-Id: Ic178d924da03968de1f140bfc8805c972b849e7b