change openstack host provider scheme name to prevent conflicts with other
host providers(e.g netcfg host provider)

Change-Id: Iad7fd4f9a9d27f84f459537f40ddd5b2a90eec47
diff --git a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHostProvider.java b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHostProvider.java
index 8ed5785..5f776b3 100644
--- a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHostProvider.java
+++ b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackSwitchingHostProvider.java
@@ -110,7 +110,7 @@
      * Creates OpenStack switching host provider.
      */
     public OpenstackSwitchingHostProvider() {
-        super(new ProviderId("host", OPENSTACK_NETWORKING_APP_ID));
+        super(new ProviderId("sona", OPENSTACK_NETWORKING_APP_ID));
     }
 
     @Activate