FST reader update to support new Kaldi versions

[mdoulaty]

https://groups.google.com/d/msg/kaldi-help/0SuCkeHyUmU/SogcAuWbBQAJ New Kaldi versions have an updated FST reader

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[googlebot]

CLAs look good, thanks!

[mdoulaty]

this should solve https://github.com/dialogflow/asr-server/issues/34

[realill]

Does it still work with older FST format? Like this one https://github.com/dialogflow/api-ai-english-asr-model ?

[mdoulaty]

yes, it does

[mdoulaty]

the pre-trained models that you mentioned (https://github.com/dialogflow/api-ai-english-asr-model), works as expected after this change

[realill]

Merged. Thanks.