base-files: introduce /lib/functions/network.sh This file will contain common...

base-files: introduce /lib/functions/network.sh This file will contain common procedures to deal with network interfaces. Initially provides network_get_ipaddr(), network_get_ipaddr6(), network_get_subnet() and network_get_subnet6() to determine the primary IP addresses or subnets of a given logical interface.

SVN-Revision: 31935