examples/pipeline: add message passing mechanism

Add network-based connectivity mechanism for the application to allow
for the exchange of configuration messages through the network as
opposed to lo

examples/pipeline: add message passing mechanism

Add network-based connectivity mechanism for the application to allow
for the exchange of configuration messages through the network as
opposed to local CLI only.

Signed-off-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>

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