install mod_ssl on centos 9 stream by default
install mod_ssl on centos 9 stream by default

This change adds mod_ssl to the default set of rpms installed
on rpm based distros.

this is required if the tls-proxy service is enabled
for multi node centos based jobs.

Change-Id: I52652de88352094c824da68e5baf7db4c17cb027

openstack-dev/devstack,nawawi/openstack,openstack-dev/devstack,nawawi/openstack