"nfdid" field in 'nfdc status show' command is temporarily unavailable
because NfdIdCollector relies on v1 Validator. It will be re-implemented
in a future commit.
refs #4089
Change-Id: I21feae43055a17438d8bd3c0439ae4e0a2d5d14c
Moving exit code to the context allows error handling routines to
rely only on the context.
Moving stdout and stderr streams to the context allows mocking in
unit tests, and allows sending output to a buffer for pre-processing
when we implement interactive mode.
refs #3864
Change-Id: Ibf59c12405d0eaca0597835cb2e30125b7f70adb
Davide Pesavento
Junxiao Shi
Alexander Afanasyev