added HostProvider to SimpleHostManager

Change-Id: I13ff57fcd24ea7bd2c3f2544a3aad7d18ceda107
diff --git a/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java b/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java
index ea68b53..a06a92e 100644
--- a/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java
+++ b/core/api/src/main/java/org/onlab/onos/net/host/DefaultHostDescription.java
@@ -20,6 +20,14 @@
     private final Set<IPAddress> ips;
 
     public DefaultHostDescription(MACAddress mac, VLANID vlan,
+            HostLocation loc) {
+        this.mac = mac;
+        this.vlan = vlan;
+        this.location = loc;
+        this.ips = new HashSet<IPAddress>();
+    }
+
+    public DefaultHostDescription(MACAddress mac, VLANID vlan,
             HostLocation loc, Set<IPAddress> ips) {
         this.mac = mac;
         this.vlan = vlan;