configure input capitalization
This pull request **introduces 1 alert** and **fixes 2** when merging 0e2ecc61c2b1caa9eac17b42025c9df2b9bad6cf into 4ce74f134ca5c318f421a54e5fbd571879bbb418 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-3895299e38b5f30ef6af355511dca3a9d47a19f1)

**new alerts:**

* 1 for Unused import

**fixed alerts:**

* 2 for Unused import This pull request **introduces 1 alert** when merging 5d65457fd92da253990cc2ac2b4842d2924ba25d into fbfe24bc548cd88c1f87fa66b00b12ddfbdeab29 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-8a62b94a4caaf0cc2e95c2c739b8b7cbc516a4c4)

**new alerts:**

* 1 for Unused import
* adding configuration to distinguish between lower_cased and cased input, affects whitelist, word classes
* added test
* added pynini sentence predict test to jenkins
* deleted sentence boundary exception

Signed-off-by: Yang Zhang <yangzhang@nvidia.com>