Reformat some BUILD files according to the buildifier guidelines

Change-Id: I8aa599f89fc14296275193475e50eb8f27b4bf0a
diff --git a/models/polatis/BUILD b/models/polatis/BUILD
index 1ec001b..13e32fb 100644
--- a/models/polatis/BUILD
+++ b/models/polatis/BUILD
@@ -8,9 +8,9 @@
     "org.onosproject.models.common",
 ]
 
-yang_model (
-  app_name = "org.onosproject.models.polatis",
-  title = "Polatis YANG Model",
-  deps = COMPILE_DEPS,
-  required_apps = APPS,
+yang_model(
+    app_name = "org.onosproject.models.polatis",
+    required_apps = APPS,
+    title = "Polatis YANG Model",
+    deps = COMPILE_DEPS,
 )