Bump libcompose and sync dependencies

vendor/github.com/RackSec/srslog/net_conn.go

@@ -1,30 +0,0 @@
-package srslog
-
-import (
-	"net"
-)
-
-// netConn has an internal net.Conn and adheres to the serverConn interface,
-// allowing us to send syslog messages over the network.
-type netConn struct {
-	conn net.Conn
-}
-
-// writeString formats syslog messages using time.RFC3339 and includes the
-// hostname, and sends the message to the connection.
-func (n *netConn) writeString(framer Framer, formatter Formatter, p Priority, hostname, tag, msg string) error {
-	if framer == nil {
-		framer = DefaultFramer
-	}
-	if formatter == nil {
-		formatter = DefaultFormatter
-	}
-	formattedMessage := framer(formatter(p, hostname, tag, msg))
-	_, err := n.conn.Write([]byte(formattedMessage))
-	return err
-}
-
-// close the network connection
-func (n *netConn) close() error {
-	return n.conn.Close()
-}