Pytest in runtime requirements

[dimexid]

In my optinion, pytest is not necessary runtime requirement (added in this commit).

Adding python-consul2 than requires useless packages:

      - python-consul2 [required: Any, installed: 0.0.16]
        - pytest [required: Any, installed: 5.3.5]
          - attrs [required: >=17.4.0, installed: 19.3.0]
          - importlib-metadata [required: >=0.12, installed: 1.5.0]
            - zipp [required: >=0.5, installed: 3.1.0]
          - more-itertools [required: >=4.0.0, installed: 8.2.0]
          - packaging [required: Any, installed: 20.1]
            - pyparsing [required: >=2.0.2, installed: 2.4.6]
            - six [required: Any, installed: 1.14.0]
          - pluggy [required: >=0.12,<1.0, installed: 0.13.1]
            - importlib-metadata [required: >=0.12, installed: 1.5.0]
              - zipp [required: >=0.5, installed: 3.1.0]
          - py [required: >=1.5.0, installed: 1.8.1]
          - wcwidth [required: Any, installed: 0.1.8]

@poppyred

[poppyred]

@josefflorian Thank you josefflorian :) , I will fix this.

[poppyred]

You are right! thank you :)