BackupVerificationService and Backup Cache

(#773): BackupVerificationService
(#779): Put a cache for the getObjectExist API call to S3. This will help keep the cost of this call at bay.
(#779): Put a rate limiter for getObjectExist API call to S3 so we can limit the no. of calls.
(#782): Provide an override method to force Priam to replace a particular IP.

Do not check existence of file if it is not SST_V2.

S3 may decide to slow down and throw an error. Best not to do s3 object check (API) if it is not required.

Update netflix oss version to 7.0.0

Update dependency

Do not check existence of file if it is not SST_V2.

S3 may decide to slow down and throw an error. Best not to do s3 object check (API) if it is not required.

Hotfix: Do not throw NPE when backup do not exist

#775 Do not throw NPE when no backup is found for the requested date.

Hotfix: Do not throw NPE when backup do not exist

(#774) Do not throw NPE when no backup is found for the requested date.

Backup Version 2.0: Save last validation information. Provide new APIs

(#766) Add metrics on CassandraConfig resource calls
(#769) Support configure/tune complex parameters in cassandra.yaml
(#770) Add Cass SNAPSHOT JMX status, snapshot version, last validated timestamp. Changes to Servlet API and new APIs.

Backup Version 2.0: Save last validation information. Provide new APIs

(#765) Add metrics on CassandraConfig resource calls
(#768) Support configure/tune complex parameters in cassandra.yaml
(#771) Add Cass SNAPSHOT JMX status, snapshot version, last validated timestamp. Changes to Servlet API and new APIs.

Backup Version 2.0

(#761) Add new file format (SST_V2) and methods to get/parse remote locations.
(#761) Upload files from SnapshotMetaService in backup version 2.0, if enabled.
(#761) Process older SNAPSHOT_V2 at the restart of Priam.
(#767) Backup Verification for Backup 2.0.
(#767) Restore for Backup 2.0
(#767) Some API changes for Snapshot Verification
(#767) Remove deprecated code like flush hour or snapshot hour.

Backup Version 2.0

• (#762) Backup Verification for Backup 2.0.
• (#762) Restore for Backup 2.0
• (#762) Some API changes for Snapshot Verification
• (#762) Remove deprecated code like flush hour or snapshot hour.