Increased variable to the mandatory amount of commands, since the
comment of SHELL_SUBCMD_ADD states
"Number of mandatory arguments including command name"
but net suspend takes the interface number to suspend
Signed-off-by: Emil Lindqvist <emil@lindq.gr>
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>