The group consensus was that we're no longer supporting "make certificate,"

as test certificates just allow people who don't know what they're doing
to dig a bigger hole for themselves and don't really help anybody who
DOES know what they're doing much.  So all of the documentation references
to "make certificate" are now removed.

PR: 8724


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@95139 13f79535-47bb-0310-9956-ffa450edef68