Test IPv4 Address Detection using Chutney

Before we start making changes to tor's IPv6 code in legacy/trac#33049 (moved), we need to get IPv4 address detection tests working in chutney.

Since chutney runs on private addresses, these tests might be difficult to write, or they might not tell us much about how tor relays behave on the public tor network. So we shouldn't spend much time on them.