* added static usage of cache in order access it easier
* added mandatory (in hawkbit-core) registration - always tenant aware caches shall be used - hawkbit depends on it
* added per cache and tenant name configuration
* (not really realted to caches) but in order to be easier evicted entities after commit handlers are now statically accessed
Signed-off-by: Avgustin Marinov <Avgustin.Marinov@bosch.com>
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