config.json add the osvinit module

This adds the osvinit module to the image.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>
apps: update

Signed-off-by: Avi Kivity <avi@cloudius-systems.com>
Move the get interface logic outside of ifconfig

Expose the logic of getting the interface outside of ifconfig
implementation and allows other module to use it.

The implementation hide the bsd related details from modules that uses
it.

Signed-off-by: Amnon Heiman <amnon@cloudius-systems.com>