suri-graphite: fix port option

If port is specified on command line we need to convert it as an
integer before using it as argument to connect.

contrib/suri-graphite

@@ -35,7 +35,7 @@ sc = suricatasc.SuricataSC(args.socket)
 sc.connect()
 
 sck = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-sck.connect((args.host, args.port))
+sck.connect((args.host, int(args.port)))
 
 while 1:
     res = sc.send_command("dump-counters")