Sketching SB & NB API.
Modified onos-of-api pom to subsume openflowj loxi-generated stuff.
diff --git a/net/api/src/main/java/org/onlab/onos/net/host/HostProviderBroker.java b/net/api/src/main/java/org/onlab/onos/net/host/HostProviderBroker.java
index 427e54e..66db967 100644
--- a/net/api/src/main/java/org/onlab/onos/net/host/HostProviderBroker.java
+++ b/net/api/src/main/java/org/onlab/onos/net/host/HostProviderBroker.java
@@ -1,6 +1,6 @@
 package org.onlab.onos.net.host;
 
-import org.onlab.onos.net.ProviderBroker;
+import org.onlab.onos.provider.ProviderBroker;
 
 /**
  * Abstraction of a host provider brokerage.