Import Error on tutorial of Relation_Extraction-BioMegatron
**Describe the bug**
Hi, 

I have an error about tutorial of relation_extraction-Biomegatron.
In Colab, there was no problem to install and to test.

Step/Code : from nemo.collections import nlp as nemo_nlp
During import process, import error was happened like this.
 ImportError: libhdf5.so.101: cannot open shared object file: No such file or directory

- Environment location: Linux centOS, Jupyter notebook.
- OS version: Linux CentOS
- PyTorch version:  1.7.1 (from nemo toolkit)
- Python version: 3.6.10
- GPU model (V100 on server)

Best Regards.
[ImportError.docx](https://github.com/NVIDIA/NeMo/files/6606953/ImportError.docx)
