Test that our test suite's list of Tor authorities is the same as the hardcoded ones in the Tor binary

Per #8959 (closed), we need to ensure that our list of hardcoded Tor authorities is the same as what’s hardcoded in the shipped Tor binary.

An example of how the string looks in the Tor binary:

Faravahar orport=443 v3ident=EFCBE720AB3A82B99F9E953CD5BF50F7EEFC7B97 154.35.175.225:80 CF6D 0AAF B385 BE71 B8E1 11FC 5CFF 4B47 9237 33BC

but there can also be at least the no-v2 and bridge flags (between orport and v3ident). Example regex:

^\S+ orport=\d+ ( bridge)?( no-v2)?v3ident=[A-Z0-9]{40} ${IP_ADDRESS}:\d+( [A-Z0-9]{4}){10}$

So for each ${IP_ADDRESS} in our TOR_AUTHORITIES list, we’d grep for that regex on strings /usr/bin/tor or something. Beautiful!

Feature Branch: test/8960-verify-tor-authorities

Original created by @anonym on 8960 (Redmine)

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