Created by: sidgoyal78

For the inference api, the current c++ unit tests for sequence based book chapters, don't handle the decoding part correctly (this is partly because the decode ops are currently being worked on).

So this issue is just to track the unit-tests that need modification, the chapters and relevant PRs are:

• semantic role labelling (PR #8058)
• rnn encoder decoder (PR #8176)
• NMT (not merged till now: PR #8314)