Debian DNS configuration allowed only for hard coded eth0

[OpenNebulaSupport]

On Debian / Ubuntu, the nameservers are configured only for the hard coded eth0.

addon-context-linux/src/etc/one-context.d/loc-10-network##deb.one

Line 143 in 0802119

if [ "eth0" == $DEV ]; then

(shouldn't depend on particular NIC names, predictable or non-predictable)