Vendor packages and add Makefile

* Vendors packages
  * Adds a Makefile that uses docker to build a static binary against musl
using alpine linux.

Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>

vendor/github.com/felixge/httpsnoop/docs.go

@@ -0,0 +1,10 @@
+// Package httpsnoop provides an easy way to capture http related metrics (i.e.
+// response time, bytes written, and http status code) from your application's
+// http.Handlers.
+//
+// Doing this requires non-trivial wrapping of the http.ResponseWriter
+// interface, which is also exposed for users interested in a more low-level
+// API.
+package httpsnoop
+
+//go:generate go run codegen/main.go