fixed incorrect key name

inventory_provider/tasks/worker.py

@@ -701,9 +701,12 @@ def _build_subnet_db(update_callback=lambda s: None):
     subnets = {}
     # scan with bigger batches, to mitigate network latency effects
     for k in r.scan_iter('netconf-interfaces-hosts:*', count=1000):
-        host_interfaces = r.get(k.decode('utf-8')).decode('utf-8')
+        k = k.decode('utf-8')
+        hostname = k[len('netconf-interfaces-hosts:'):]
+        host_interfaces = r.get(k).decode('utf-8')
         host_interfaces = json.loads(host_interfaces)
         for ifc in host_interfaces:
+            ifc['router'] = hostname
             entry = subnets.setdefault(ifc['interface address'], [])
             entry.append(ifc)