This option allows to keep the client running
even when its input is closed. This will be used for
tests and for reporting because it allows to write:
echo 'monitor trace {"add":{"api":"*","request":"*","event":"*","session":"*","global":"*"}}' |
afb-client -k $WSURL > logfile
to capture all events.
Change-Id: If1c7804556190fd8ec9388260fe014c50b498b1d
Signed-off-by: José Bollo <jose.bollo@iot.bzh>