fix change to loading http2 in apache for running tests

Author: gggeek

tests/ci/setup/setup_apache.sh

@@ -15,7 +15,7 @@ DEBIAN_FRONTEND=noninteractive apt-get install -y apache2
 # set up Apache for php-fpm
 
 a2enmod rewrite proxy_fcgi setenvif ssl
-if  apache2ctl -M 2>/dev/null | grep -q http2; then
+if [ -f /etc/apache2/mods-available/http2.load ]; then
     a2enmod http2
 fi