[keycloak-dev] User SPI cache policies

[Bill Burke]

You can now define cache policies per UserStorageProvider.

* NO_CACHE - don't cache users loaded from this provider

* MAX_LIFESPAN - max lifespan of user in cache

* EVICT_DAILY - specify a time of day when the cache will be expired 
every day.

* EVICT_WEEKLY - specify a day of the week and time of day when the 
cache will be expired.


Bill