ansible/changelogs/fragments/35120-redis_inventory_plugin_flush_cache.yaml

bugfixes:
- Only delete host key from redis in-memory cache if present.
Only delete key from redis in-memory cache if present (#35126) Fixes #35120 : the redis cache plugin keeps key/value entries in an in-memory cache to avoid hitting the redis database each time. The problem is that a cache entry is only set when a value is get or set but it is always deleted when trying to delete a value. When the --flush-cache ansible-playbook option is used, the redis cache plugin is first asked to remove every entry corresponding to every hostname present in the inventory. As no value as been set/get so far, it then tries to delete an unexisting value from the cache and hence crashes with a KeyError exception. (cherry picked from commit ee3dfef016e1f863b1392b50dab190d256d383ee) 2018-10-03 17:06:44 +02:00			`bugfixes:`
			`- Only delete host key from redis in-memory cache if present.`