Implement L2 cache service

[G-Art]

Create an abstract cache service that allows using different cache implementation (guava cache, Ehcache, etc)

1. Create a configuration for the cache service.
2. Implement a cache service that uses cache regions to invalidate cache.
3. method to trigger cache invalidation based on item type.
4. method to trigger cache invalidation based on region definition.
5. method to trigger all regions cache invalidation.