v1.70.3
build: modernize Go usage
serve http: support unix sockets and multiple listners
http: add client certificate user auth middleware
cmd/rcd: Fix command docs to include command specific prefix (#6675)
http servers: add --user-from-header to use for authentication
lib/http: fix race between Serve() and Shutdown()
lib/http: disable automatic authentication skipping for unix sockets
build: update logging statements to make json log work - fixes #6038