Refactor distribution interceptor

DistributionInterceptor, as it looks now is unnecessary complex. Before adding more functionality on top of it (i.e. ISPN-1539) it should be refactored:

• extract L1 logic into a different interceptor
• this would require moving the StateTransferLock logic into another interceptor as well
• now that we have separation between tx and non-tx caches, we can extract the remaining logic into TransactionalDistributionInterceptor and NonTransactional...