fix: use correct dns in onie installer dhcp class config
fix: use correct dns in onie installer dhcp class config

mikaeld66/himlar,mikaeld66/himlar,norcams/himlar,raykrist/himlar,norcams/himlar,norcams/himlar,raykrist/himlar,mikaeld66/himlar,mikaeld66/himlar,norcams/himlar,raykrist/himlar,raykrist/himlar,raykrist/himlar,norcams/himlar,mikaeld66/himlar