Since the script 'apachectl' from the httpd project is severly mutilated
on several distros, use the executable httpd/apache2 directly in pytest
runs.
Remove detection of apachectl form autoconf and cmake.
Closes#16000
Fixes:
- in uds tests, abort also silently on os errors
- be conservative on the h3 goaway duration
- detect curl debug build and use in checks
- fix caddy version check for slight difference under linux
- set caddy default path fitting for linux
- fix deprecation warnings in valid time checks
FTP tests:
- add '--with-test-vsftpd=path' to configure
- use vsftpd default path suitable for linux
- add test_30 with plain FTP tests
- add test_31 with --ssl-reqd FTP tests
- add vsftpd to linux GHA for pytest workflows
Closes#13661
- necessary ports are bound at start of test suite and then
given to server fixtures for use.
- this make parallel use of pytest (in separate directories),
practically safe for use as OS tend to not reuse such port numbers
for a while
Closes#10692
- httpd is only one server we test with
- the suite coveres the HTTP protocol in general where
the default test cases need a more beefy environment
Closes#10654
