test: add failing url parse tests as known_issue

url resolve and parse do not currently adhere to the same url
spec parsing rules that browsers use, which leads to some
issues. This addition to test/known_issues creates a set of
tests based on the w3c/whatwg test suite from:

Refs: https://github.com/w3c/web-platform-tests/tree/master/url

PR-URL: #5885
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>