Fix dhcp multiple default gateways issue

The system only adds one gateway and if it receives default gateway from
incorrect interface (like control plane primary interface), the instance loses
access to external network.

Fixing by making primary interfaces (control plane) static.

Change-Id: I511f6721c2ecac29eccbdd63160f748c1cc2ee07
diff --git a/classes/cluster/virtual-mcp10-ovs/infra/config.yml b/classes/cluster/virtual-mcp10-ovs/infra/config.yml
index 99b4212..a4461c3 100644
--- a/classes/cluster/virtual-mcp10-ovs/infra/config.yml
+++ b/classes/cluster/virtual-mcp10-ovs/infra/config.yml
@@ -39,7 +39,9 @@
         ens4:
           enabled: true
           type: eth
-          proto: dhcp
+          proto: static
+          address: ${_param:single_address}
+          netmask: 255.255.255.0
   nginx:
     server:
       site:
diff --git a/classes/cluster/virtual-mcp10-ovs/openstack/control.yml b/classes/cluster/virtual-mcp10-ovs/openstack/control.yml
index 997fdae..b235a84 100644
--- a/classes/cluster/virtual-mcp10-ovs/openstack/control.yml
+++ b/classes/cluster/virtual-mcp10-ovs/openstack/control.yml
@@ -42,7 +42,9 @@
         eth1:
           enabled: true
           type: eth
-          proto: dhcp
+          proto: static
+          address: ${_param:single_address}
+          netmask: 255.255.255.0
   keepalived:
     cluster:
       instance:
diff --git a/classes/cluster/virtual-mcp10-ovs/openstack/dashboard.yml b/classes/cluster/virtual-mcp10-ovs/openstack/dashboard.yml
index 2088261..a2b9762 100644
--- a/classes/cluster/virtual-mcp10-ovs/openstack/dashboard.yml
+++ b/classes/cluster/virtual-mcp10-ovs/openstack/dashboard.yml
@@ -29,4 +29,6 @@
         eth1:
           enabled: true
           type: eth
-          proto: dhcp
+          proto: static
+          address: ${_param:single_address}
+          netmask: 255.255.255.0
diff --git a/classes/cluster/virtual-mcp10-ovs/stacklight/server.yml b/classes/cluster/virtual-mcp10-ovs/stacklight/server.yml
index 4a8f12b..288e9d9 100644
--- a/classes/cluster/virtual-mcp10-ovs/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp10-ovs/stacklight/server.yml
@@ -40,4 +40,6 @@
         ens4:
           enabled: true
           type: eth
-          proto: dhcp
+          proto: static
+          address: ${_param:single_address}
+          netmask: 255.255.255.0