add buildozer to deps

Godeps/Godeps.json

@@ -4,6 +4,7 @@
 	"GodepVersion": "v80-k8s-r1",
 	"Packages": [
 		"github.com/bazelbuild/bazel-gazelle/cmd/gazelle",
+		"github.com/bazelbuild/buildtools/buildozer",
 		"github.com/cespare/prettybench",
 		"github.com/client9/misspell/cmd/misspell",
 		"github.com/cloudflare/cfssl/cmd/cfssl",
@@ -4239,4 +4240,4 @@
 			"Rev": "db5cfe13f5cc80a4990d98e2e1b0707a4d1a5394"
 		}
 	]
-}
+}
\ No newline at end of file

hack/godep-save.sh

@@ -56,6 +56,7 @@ fi
 # won't pick them up.
 REQUIRED_BINS=(
   "github.com/bazelbuild/bazel-gazelle/cmd/gazelle"
+  "github.com/bazelbuild/buildtools/buildozer"
   "github.com/cespare/prettybench"
   "github.com/client9/misspell/cmd/misspell"
   "github.com/cloudflare/cfssl/cmd/cfssl"