Sh postprocess

[anand-nv]

What does this PR do ?

Add support for postprocessor and preprocessor far in sparrowhawk tests

Before your PR is "Ready for review"

Pre checks:

• [x] Have you signed your commits? Use git commit -s to sign.
• [ ] Do all unittests finish successfully before sending PR? 2) Sparrowhawk tests bash tools/text_processing_deployment/export_grammars.sh --MODE=test ... This currently fails since postprocess.far has been enabled in sparrowhawk and the test cases do not consider the use of a postprocessor Switch to using a postprocessor when tests are updated. For now reverts to not using postprocessor in tests

PR Type:

• [x] Test

[github-actions[bot]]

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