Send PIM Join/Prune messages based on events from the McastService.

Also change Interface to return a list of addresses rather than a set
to allow applications to rely on the order of configuration

Change-Id: Ie7f62fee507639325ee0a77b8db4088dae34597e
diff --git a/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java b/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
index f222bb3..bf8c4d7 100644
--- a/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
+++ b/src/main/java/org/onosproject/segmentrouting/config/DeviceConfiguration.java
@@ -137,7 +137,7 @@
                 // skip if there is no corresponding device for this ConenctPoint
                 if (info != null) {
                     // Extract subnet information
-                    Set<InterfaceIpAddress> interfaceAddresses = networkInterface.ipAddresses();
+                    List<InterfaceIpAddress> interfaceAddresses = networkInterface.ipAddressesList();
                     interfaceAddresses.forEach(interfaceAddress -> {
                         // Do not add /0 and /32 to gateway IP list
                         int prefixLength = interfaceAddress.subnetAddress().prefixLength();
@@ -495,4 +495,4 @@
     public Set<ConnectPoint> excludedPorts() {
         return excludedPorts;
     }
-}
\ No newline at end of file
+}