ONOS-4660 Additional GATEWAY type node bootstrap

- Add uplink interface to the router bridge
- Set separate controller for the router bridge
- Use OVSDB provider to check the ports list and keep OVSDB session

Limitation:
OVSDB provider does not provide port or bridge updates, that is,
any changes on the router bridge may not be detected by ONOS

Change-Id: I1f17f4fb2c050afdbda1e5ffc06f6485903d3d90
diff --git a/apps/openstacknode/network-cfg.json b/apps/openstacknode/network-cfg.json
index 4720104..daecd85 100644
--- a/apps/openstacknode/network-cfg.json
+++ b/apps/openstacknode/network-cfg.json
@@ -23,7 +23,9 @@
                         "managementIp" : "10.203.198.125",
                         "dataIp" : "10.134.33.208",
                         "integrationBridge" : "of:00000000000000a3",
-                        "routerBridge" : "of:00000000000000b1"
+                        "routerBridge" : "of:00000000000000b3",
+                        "uplinkPort" : "veth1",
+                        "routerController" : "172.17.0.2"
                     },
                     {
                         "hostname" : "gateway-02",
@@ -31,7 +33,9 @@
                         "managementIp" : "10.203.198.131",
                         "dataIp" : "10.134.33.209",
                         "integrationBridge" : "of:00000000000000a4",
-                        "routerBridge" : "of:00000000000000b2"
+                        "routerBridge" : "of:00000000000000b4",
+                        "uplinkPort" : "veth1",
+                        "routerController" : "172.17.0.2"
                     }
                 ]
             }