renamed lift to stilts

Change-Id: I38e058ba7eadb4f45c8ef4639e8abb387c1f0afb
diff --git a/y2019/control_loops/python/BUILD b/y2019/control_loops/python/BUILD
index f3e4ca1..b038507 100644
--- a/y2019/control_loops/python/BUILD
+++ b/y2019/control_loops/python/BUILD
@@ -105,9 +105,9 @@
 )
 
 py_binary(
-    name = "lift",
+    name = "stilts",
     srcs = [
-        "lift.py",
+        "stilts.py",
     ],
     legacy_create_init = False,
     restricted_to = ["//tools:k8"],