Update PublicSuffixMatcher to use "formal algorithm"

We’ve been using the PublicSuffixMatcher component from “httpcomponents-client” to implement comparisons of domains and public suffixes according to the rules defined by the standard at https://github.com/publicsuffix/list/wiki/Format#formal-algorithm and using the Public Suffix List produced by Mozilla at https://publicsuffix.org/list/effective_tld_names.dat.

We noticed unexpected results where the current behaviour of PublicSuffixMatcher deviates from the formal algorithm. We ported over the unit tests from https://github.com/publicsuffix/list/blob/master/tests/test_psl.txt to determine all the differences as there are a number of tests which fail. This follows on from an earlier discussion on the mailing list at https://lists.apache.org/thread/ylom7gcopxtrcb4zm6q8c9k7fo0jt5km.

We have made changes to get all the tests to pass and will raise a PR shortly to reference this ticket.