S3Object opened in getS3ObjectAndMetadata() should be closed.

[mongodb s3 tarantool] Fixing common-java:DuplicatedBlocks - Source files should not have any duplicated blocks

[cassandra cassandra2 dynamodb hbase098 hbase10 jdbc s3] Fixing squid:S1481 - Unused local variables should be removed

- version number fix
- DB methods return Status objects.

This reverts commit 0e5866eb.

Restores #372