Move consistency-check module from enterprise to community
Small cleanup
Add store consistency checks to store migration tests

o small cleanups and refactors
Fix for 'Cluster is not operational' issue
Fixed possible NPE during serialization
Merge pull request #2730 from davidegrohmann/2.1-consistency-check-upgrade-tests

Add store consistency checks to store migration tests
Merge pull request #2767 from lutovich/2.1-cluster-is-not-operational

Fix for 'Cluster is not operational' issue
Merge pull request #2772 from lutovich/2.1-possible-npe-fix

Fixed possible NPE during serialization