Format bzl files with buildifier 0.12.0

Change-Id: Ic6888d5338b20dfdee1bd7ab65c544c4e041530a

tools/bazlets.bzl

diff --git a/tools/bazlets.bzl b/tools/bazlets.bzl
index b5c240c..de1b5d2 100644
--- a/tools/bazlets.bzl
+++ b/tools/bazlets.bzl
@@ -1,17 +1,16 @@
 NAME = "com_googlesource_gerrit_bazlets"
 
 def load_bazlets(
-    commit = None,
-    local_path = None
-  ):
-  if not local_path:
-      native.git_repository(
-          name = NAME,
-          remote = "https://gerrit.googlesource.com/bazlets",
-          commit = commit,
-      )
-  else:
-      native.local_repository(
-          name = NAME,
-          path = local_path,
-      )
+        commit = None,
+        local_path = None):
+    if not local_path:
+        native.git_repository(
+            name = NAME,
+            remote = "https://gerrit.googlesource.com/bazlets",
+            commit = commit,
+        )
+    else:
+        native.local_repository(
+            name = NAME,
+            path = local_path,
+        )