add routing and DNS configuration in salt-master

Ensure ens3 is set up and default gateway is set,
also that nameserver is specified.

PROD-18280

Change-Id: Ic9afcd85abf2e5f5704e08dd50acb4cf368fd308
diff --git a/classes/cluster/sl-os-ovs/infra/config.yml b/classes/cluster/sl-os-ovs/infra/config.yml
index 945673b..0f10552 100644
--- a/classes/cluster/sl-os-ovs/infra/config.yml
+++ b/classes/cluster/sl-os-ovs/infra/config.yml
@@ -49,6 +49,7 @@
     salt_master_environment_repository: "https://github.com/tcpcloud"
     salt_master_environment_revision: master
     reclass_config_master: ${_param:infra_config_deploy_address}
+    reclass_config_master_gateway: ${_param:infra_config_gateway_address}
     single_address: ${_param:infra_config_address}
     salt_master_host: 127.0.0.1
     salt_master_base_environment: prd
@@ -58,6 +59,13 @@
   linux:
     network:
       interface:
+        ens3:
+          enabled: true
+          type: eth
+          proto: static
+          address: ${_param:reclass_config_master}
+          gateway: ${_param:reclass_config_master_gateway}
+          netmask: 255.255.255.0
         ens4:
           enabled: true
           type: eth