Add mod_info, mod_status, mod_actions, mod_asis, and UserDir tests.

[PaulLodge]

This PR increases the pyhttpd test coverage, helping to make httpd better

• This PR does not report or submit a patch for a security
  vulnerability (see SECURITY.md
  and https://www.apache.org/security/#reporting-a-vulnerability).
• Code follows the httpd style guide.
• New log messages (level debug or higher) use an empty APLOGNO() tag;
  numbers are assigned by a committer at merge time
  (see docs/log-message-tags/README).
• If the change is user-visible, a changes-entries/*.txt file is included,
  following the template in README.CHANGES (not needed otherwise).

[PaulLodge]

Tested on fc43 and windows