dl: add go1.15.4 and go1.14.11

Change-Id: I825747bd4af69d448e5586e566e0036039e24d6e
Reviewed-on: https://go-review.googlesource.com/c/dl/+/267900
Trust: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/go1.14.11/main.go b/go1.14.11/main.go
new file mode 100644
index 0000000..2e1b6f5
--- /dev/null
+++ b/go1.14.11/main.go
@@ -0,0 +1,24 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The go1.14.11 command runs the go command from Go 1.14.11.
+//
+// To install, run:
+//
+//     $ go get golang.org/dl/go1.14.11
+//     $ go1.14.11 download
+//
+// And then use the go1.14.11 command as if it were your normal go
+// command.
+//
+// See the release notes at https://golang.org/doc/devel/release.html#go1.14.minor
+//
+// File bugs at https://golang.org/issues/new
+package main
+
+import "golang.org/dl/internal/version"
+
+func main() {
+	version.Run("go1.14.11")
+}
diff --git a/go1.15.4/main.go b/go1.15.4/main.go
new file mode 100644
index 0000000..a68fc72
--- /dev/null
+++ b/go1.15.4/main.go
@@ -0,0 +1,24 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// The go1.15.4 command runs the go command from Go 1.15.4.
+//
+// To install, run:
+//
+//     $ go get golang.org/dl/go1.15.4
+//     $ go1.15.4 download
+//
+// And then use the go1.15.4 command as if it were your normal go
+// command.
+//
+// See the release notes at https://golang.org/doc/devel/release.html#go1.15.minor
+//
+// File bugs at https://golang.org/issues/new
+package main
+
+import "golang.org/dl/internal/version"
+
+func main() {
+	version.Run("go1.15.4")
+}