[ONOS-7492] Add unit test for openstack router and subnet REST API

Change-Id: Icc6b1ce00e941b66c9027db7ec43b6568e323e76
diff --git a/apps/openstacknetworking/src/test/resources/org/onosproject/openstacknetworking/web/openstack-subnet.json b/apps/openstacknetworking/src/test/resources/org/onosproject/openstacknetworking/web/openstack-subnet.json
new file mode 100644
index 0000000..ff8307d
--- /dev/null
+++ b/apps/openstacknetworking/src/test/resources/org/onosproject/openstacknetworking/web/openstack-subnet.json
@@ -0,0 +1,27 @@
+{
+  "subnet": {
+    "id": "d32019d3-bc6e-4319-9c1d-6722fc136a22",
+    "enable_dhcp": true,
+    "network_id": "d32019d3-bc6e-4319-9c1d-6722fc136a22",
+    "tenant_id": "4fd44f30292945e481c7b8a0c8908869",
+    "dns_nameservers": [
+      "string"
+    ],
+    "allocation_pools": [
+      {
+        "start": "192.168.199.2",
+        "end": "10.10.10.254"
+      }
+    ],
+    "host_routes": [
+      {
+        "destination": "",
+        "nexthop": ""
+      }
+    ],
+    "ip_version": 4,
+    "gateway_ip": "192.168.199.1",
+    "ipv6_address_mode": "",
+    "ipv6_ra_mode": ""
+  }
+}