Update FastPitch
This pull request **introduces 1 alert** when merging e64d265f4be1ff2f93a15bec7937e84e96091137 into 9c75c348bc8137717ca79a34a93c50028ffdfd38 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-815154e263c9e74ca0cef21d3ca85e9d209c2060)

**new alerts:**

* 1 for Unused import This pull request **introduces 2 alerts** when merging 079080be385286604fb4ed4bac2100f872351607 into 05438876740468e1582793b72039e9865ee259a5 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-7aa0faae55022f6d913e93f3f514cb9f0e297d0e)

**new alerts:**

* 2 for Unused import This pull request **introduces 2 alerts** when merging 83aaba1adb8bb97c6bcd3f47585d34a05cdfa01c into 05438876740468e1582793b72039e9865ee259a5 - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-0411a589b49fc4b7594842efc3bfa51b01e4bf09)

**new alerts:**

* 2 for Unused import This pull request **introduces 3 alerts** when merging 3b6b30f18d4880d5b278be79000e133157a2343a into b94c7a17accf40e4235b9f746caaf8d9ea5d20af - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-ca4d08fbb88e8c21bc37755f6b305c8cf7479a75)

**new alerts:**

* 3 for Unused import This pull request **introduces 3 alerts** when merging fcf0168bb17c5795218135d58d545cdf68134d84 into d23ee3e3d5ed2fd17608b736ebae2b415a258a9e - [view on LGTM.com](https://lgtm.com/projects/g/NVIDIA/NeMo/rev/pr-a4170c432eda390dec7d02f858893eb2caff576c)

**new alerts:**

* 3 for Unused import
Adds the alignment framework to Fastpitch (AKA FastPitch 1.1 from https://github.com/NVIDIA/DeepLearningExamples/tree/master/PyTorch/SpeechSynthesis/FastPitch)