Changed the way ProviderId is made to include URI scheme portion.
diff --git a/core/api/src/test/java/org/onlab/onos/net/provider/AbstractProviderTest.java b/core/api/src/test/java/org/onlab/onos/net/provider/AbstractProviderTest.java
index 745aebc..c2e5cfc 100644
--- a/core/api/src/test/java/org/onlab/onos/net/provider/AbstractProviderTest.java
+++ b/core/api/src/test/java/org/onlab/onos/net/provider/AbstractProviderTest.java
@@ -11,7 +11,7 @@
 
     @Test
     public void basics() {
-        ProviderId id = new ProviderId("foo.bar");
+        ProviderId id = new ProviderId("of", "foo.bar");
         TestProvider provider = new TestProvider(id);
         assertEquals("incorrect id", id, provider.id());
     }