Bug fix for [ONOS-6938] null-create-host gives error

Change-Id: I838c0d9d84034207f2dcf6420e82016fcc728922
diff --git a/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHost.java b/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHost.java
index 3757c0f..5197e79 100644
--- a/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHost.java
+++ b/providers/null/src/main/java/org/onosproject/provider/nil/cli/CreateNullHost.java
@@ -32,6 +32,7 @@
 import org.onosproject.provider.nil.NullProviders;
 import org.onosproject.provider.nil.TopologySimulator;
 
+import java.util.HashSet;
 import java.util.Iterator;
 
 /**
@@ -88,6 +89,7 @@
         BasicHostConfig cfg = cfgService.addConfig(id, BasicHostConfig.class);
 
         cfg.locType(locType);
+        cfg.setLocations(new HashSet<HostLocation>() {{ add(location); }});
 
         if (GEO.equals(locType)) {
             cfg.latitude(latOrY).longitude(longOrX);