
At the moment we don't provide any option rather then use memcached backend. With that we also hardocde list of packages that should be installed inside virtualenv for selected backend. Adding bmemcached requirement to oslo_cache.memcache_pool [1] gives us opportunity to refactor this bit of deployment and allow to be more flexible in backend selection and requirements installation for it. [1] https://review.opendev.org/c/openstack/oslo.cache/+/854628 Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/858981/4 Change-Id: I2810208301fb31eeeabf31e4b38add7f8aa3e00b