flo: Add dhcp and renew entries for eth0

Addition aligns flo with other otg supporting Nexus devices.  Without
the entries, a usb ethernet device will not autoconfigure an ip address.

Change-Id: Iefe47a060c263e0319ee909616ad40fdb8c3673e
Merge "flo: Add dhcp and renew entries for eth0" into jb-mr2