Revert "bz#1152516 don't autostart networking in discovery image"

This reverts commit 91b9f0d0876d86daadffb3bb54c39c42790b6d4a.
due to rhbz#1155665
Merge pull request #105 from mburns72h/bz1155665

Revert "bz#1152516 don't autostart networking in discovery image"