[cli]update cli unit test, test=doc

[doc]update frontend readme, test=doc

* add test_cli.sh

* set -e

* updated ASR released model

* update the doc, test=doc_fix

[TTS] Add support for finetuning speedyspeech

[CLI] st:  unified config for st

[tts]fix tone_sandhi of yi

如果遇到已存在的软链接则跳过，如果在dump中找不到这个符号则删除dump_finetune中的文件。

* fix config, test=asr

* fix config, test=doc_fix

* add en and decode_method for cli/asr, test=asr

* test=asr

* fix, test=doc_fix