Allow "net virtual" command to attach or detach virtual
interfaces. This is useful for device management.
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>