Fixing the websocket command output to align the fields and
printing interface index instead of a pointer value.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>
As the common.h is only meant to be used by the network
shell files, rename it to be more descriptive in order to
avoid possible conflicts with any other common.h file.
Signed-off-by: Jukka Rissanen <jukka.rissanen@nordicsemi.no>