Initial implementation fo making all content entities revisionable
Make all UuidIndex tests extend MultiversionWebTestBase instead and remove the unecessary UuidIndexTestBase.
Remove unecessary entity definition cache clear
Fixed test with wrong assumption. Demonstrated this wrong assumption with expanded test coverage.
Blacklist the entity_test_base_field_display entity type from being tested.
Consolidated the entity storage tests
Merge pull request #7 from dickolsson/2351207-make-revisionable

Issue #2351207 by dixon_: Create tests for converting entity_test type to revisionable.