Update py-ms to 2.2.1

[pyup-bot]

This PR updates py-ms from 2.2.0 to 2.2.1.

Changelog

2.2.1

**Bugs**
- If you set a config file from env, but exists a default file. PyMS load the default file first instead the env file

Links

• PyPI: https://pypi.org/project/py-ms
• Changelog: https://pyup.io/changelogs/py-ms/
• Repo: https://github.com/python-microservices/pyms/

[coveralls]

Pull Request Test Coverage Report for Build 593

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 71.739%

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Totals
Change from base Build 590:	0.0%
Covered Lines:	99
Relevant Lines:	138

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💛 - Coveralls