Run acceptance tests on the Apache web server
Run acceptance tests on the Apache web server

The Talk app requires a multi-threaded web server (due to its use of
long polling), so the configuration of the acceptance tests is changed
to use the Apache web server instead of the default PHP built-in web
server.

Signed-off-by: Daniel Calviño Sánchez <bd7629e975cc0e00ea7cda4ab6a120f2ee42ac1b@gmail.com>

nextcloud/spreed,nextcloud/spreed,nextcloud/spreed