Networking bounce not supported anymore

According to http://askubuntu.com/questions/441619/how-to-successfully-restart-a-network-without-reboot-over-ssh

There is no longer any supported way to "bounce" the network, and even invoking the script in `/etc/init.d/networking` is not supported now in any way, since it just returns exit status 1.
Merge pull request #1 from kingdonb/patch-1

Networking bounce not supported anymore