See how Boundary would look with gofumpt applied (#853)

* See how Boundary would look with https://github.com/mvdan/gofumpt applied

Results of running `gofumpt -w -s .`

* Update tools file and Makefile for gofumpt

Co-authored-by: Jeff Mitchell <jeffrey.mitchell@gmail.com>

internal/servers/controller/handlers/authmethods/authmethod_service.go

@@ -31,9 +31,7 @@ const (
 	pwKey        = "password"
 )
 
-var (
-	maskManager handlers.MaskManager
-)
+var maskManager handlers.MaskManager
 
 func init() {
 	var err error