Merge r1671397, r1672466, r1672564 from trunk:

Add output for "?auto" version of server-status
to proxy status, mod_ssl session cache info,
mod_cache_socache and the status hook of the
individual socache implementations.


Followon to r1671397 for proxy server-status
in auto mode:
- don't show HTML legend
- Show correct worker name


More followon to r1671397 for proxy server-status
in auto mode:
- remove remaining HTML markup

Submitted by: rjung
Reviewed/backported by: jim


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1674660 13f79535-47bb-0310-9956-ffa450edef68