Add default route option to kubevirt network

Change-Id: Ia2a2d9b34ec3c493e04d56c544c22812e32d524a
(cherry picked from commit d95d3524caff5449aded4ff9397c3ed717fc91e6)
diff --git a/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtNetworkCodecTest.java b/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtNetworkCodecTest.java
index 492847a..667ca4b 100644
--- a/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtNetworkCodecTest.java
+++ b/apps/kubevirt-networking/app/src/test/java/org/onosproject/kubevirtnetworking/codec/KubevirtNetworkCodecTest.java
@@ -96,6 +96,7 @@
                 .name("net-1")
                 .type(KubevirtNetwork.Type.FLAT)
                 .gatewayIp(IpAddress.valueOf("10.10.10.1"))
+                .defaultRoute(true)
                 .mtu(1500)
                 .cidr("10.10.10.0/24")
                 .hostRoutes(ImmutableSet.of(hostRoute1, hostRoute2))
@@ -121,6 +122,7 @@
         assertThat(network.type().name(), is("FLAT"));
         assertThat(network.cidr(), is("10.10.0.0/24"));
         assertThat(network.gatewayIp().toString(), is("10.10.0.1"));
+        assertThat(network.defaultRoute(), is(true));
         assertThat(network.ipPool().start().toString(), is("10.10.10.100"));
         assertThat(network.ipPool().end().toString(), is("10.10.10.200"));
         assertThat(network.dnses().size(), is(1));