Update apache configuration after horizon packaging change
Update apache configuration after horizon packaging change

The location of static files has changed, and we don't need aliases for
them anymore.

sayalilunkad/openstack-quickstart,wenhuizhang/openstack-quickstart,SUSE-Cloud/openstack-quickstart,vuntz/openstack-quickstart,sjamgade/openstack-quickstart,hayderimran7/openstack-quickstart,toabctl/openstack-quickstart