Enable DNS servers with OVS port intefaces

The template for ovs_port in linux formula do not
have nameservers option so the server become without
any nameservers configuration.

Add parameter for name servers to ovs_port type
interface template.

PROD-31606

Change-Id: If44c7ca3f12069ecd5f68069ce89fa9eb3ee42b9
3 files changed