Filter interfaces that have a dashboard assigned

brian_dashboard_manager/inventory_provider/interfaces.py

@@ -47,7 +47,8 @@ def get_interfaces(host):  # pragma: no cover
         interface['ipv4'] = ipv4
         interface['ipv6'] = ipv6
         return interface
-    enriched = list(map(enrich, interfaces))
+    filtered = filter(lambda i: len(i['dashboards']) > 0, interfaces)
+    enriched = list(map(enrich, filtered))
     return enriched