e2bda32b23
oslo_cache.memcache_pool uses the same dogpile.cache but adds support of pools, which may mark one memcached backend as dead, when instance is down. os_nova uses oslo_cache.memcache_pool for some time, so this patch adds some unification for our roles as well. Change-Id: Ice9a806aa4c6ab60c665f35b7197555f405ac0eb