Fix default route in multiple nics net isolation templates

The non-controller nodes in the network/config/multiple-nics
directory do not have a default route configured. This change
adds the default route to the non-controller nodes using the
ControlPlaneDefaultRoute parameter, which was already a part
of these templates.

Change-Id: Idaaeb2a539555ac14cc613b202c428108bc19a30

network/config/multiple-nics/ceph-storage.yaml

@@ -92,6 +92,9 @@ resources:
                 -
                   ip_netmask: 169.254.169.254/32
                   next_hop: {get_param: EC2MetadataIp}
+                -
+                  default: true
+                  next_hop: {get_param: ControlPlaneDefaultRoute}
             -
               type: interface
               name: nic2

network/config/multiple-nics/cinder-storage.yaml

@@ -92,6 +92,9 @@ resources:
                 -
                   ip_netmask: 169.254.169.254/32
                   next_hop: {get_param: EC2MetadataIp}
+                -
+                  default: true
+                  next_hop: {get_param: ControlPlaneDefaultRoute}
             -
               type: interface
               name: nic2

network/config/multiple-nics/compute.yaml

@@ -80,6 +80,9 @@ resources:
                 -
                   ip_netmask: 169.254.169.254/32
                   next_hop: {get_param: EC2MetadataIp}
+                -
+                  default: true
+                  next_hop: {get_param: ControlPlaneDefaultRoute}
             -
               type: interface
               name: nic2

network/config/multiple-nics/swift-storage.yaml

@@ -92,6 +92,9 @@ resources:
                 -
                   ip_netmask: 169.254.169.254/32
                   next_hop: {get_param: EC2MetadataIp}
+                -
+                  default: true
+                  next_hop: {get_param: ControlPlaneDefaultRoute}
             -
               type: interface
               name: nic2