SmartConnect cannot handle IPv6 address with square brackets

[waynez]

Describe the bug

SmartConnect uses __FindSupportedVersion() to read the preferred API version from the host, however that method uses six.moves.http_client.HTTPSConnection(__FindSupportedVersion() -> __GetServiceVersionDescription() -> __GetElementTree()) which cannot handle IPv6 address with square brackets.

   if httpProxyHost:
      kwargs = {"context": sslContext} if sslContext else {}
      conn = http_client.HTTPSConnection(httpProxyHost, port=httpProxyPort, **kwargs)
      conn.set_tunnel(server, port)
   elif protocol == "https":
      kwargs = {"context": sslContext} if sslContext else {}
      conn = http_client.HTTPSConnection(server, port=port, **kwargs)
   elif protocol == "http":
      conn = http_client.HTTPConnection(server, port=port)
   else:
      raise Exception("Protocol " + protocol + " not supported.")
   conn.request("GET", path)

That's a bit contrary when considering we have code logic to handle IPv6 addr with square brackets inside Connect()

   try:
      info = re.match(_rx, host)
      if info is not None:
         host = info.group(1)
         if host[0] == '[':
            host = info.group(1)[1:-1]
         if info.group(2) is not None:
            port = int(info.group(2)[1:])
   except ValueError as ve:
      pass

Reproduction steps

1. SmartConnect(host="[2001:0db8:85a3:0000:0000:8a2e:0370:7334]", user="xxx", pwd="xxx", port=443)
2. Exceptions was thrown out.

Expected behavior

Should be able to handle IPv6 address with square brackets

Additional context

No response