KAFKA-6538: Fixed RocksDBStore to enhance processor state exceptions with more context

[jadireddi]

https://issues.apache.org/jira/browse/KAFKA-6538
Fixed against Base:1.1 version.
Fixed Class:RocksDBStore to enhance Processor State Exception containing Key/Value values as Bytes/byte[] to Bytes/Bytes form in the error message for displaying more useful context .

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[jadireddi]

Hi @mjsax ,
Could you please review PR and let me know if any changes need.

[mjsax]

Thanks for the PR @jadireddi .

Two comments:

1. The PR should be against trunk -- we can cherry-pick it later to 1.1 branch
2. The PR does not yet address the actual issue: wrapping byte[] in Bytes does not provide value to the user, as the error message will still show binary data that is not readable by humans. Because RocksDBStore does not contain deserializers we should catch the exception in the caller and throw a new exception with human readable key/value information. The caller should know the original key/value.

[mjsax]

@jadireddi What is the status of this PR?

[jadireddi]

@mjsax Working on this PR. Would be sending for review you in a day or so.

[jadireddi]

As the branch created against Base:1.1 version. Closing this pull.
Changes are being taken against pull: #5103