Fixes constraint generation for pypi providers (#15470)
Fixes constraint generation for pypi providers (#15470)

* Fixes constraint generation for pypi providers

The constraints generated from PyPI version of providers, missed
core requirements of Airflow, therefore the constraints were not
consistent with setup.py core requirements.

Fixes: #15463
mistercrunch/airflow,nathanielvarona/airflow,danielvdende/incubator-airflow,cfei18/incubator-airflow,mistercrunch/airflow,nathanielvarona/airflow,apache/incubator-airflow,cfei18/incubator-airflow,bolkedebruin/airflow,lyft/incubator-airflow,dhuang/incubator-airflow,apache/incubator-airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,sekikn/incubator-airflow,cfei18/incubator-airflow,bolkedebruin/airflow,danielvdende/incubator-airflow,mistercrunch/airflow,nathanielvarona/airflow,apache/airflow,dhuang/incubator-airflow,sekikn/incubator-airflow,dhuang/incubator-airflow,lyft/incubator-airflow,mistercrunch/airflow,danielvdende/incubator-airflow,bolkedebruin/airflow,Acehaidrey/incubator-airflow,apache/airflow,bolkedebruin/airflow,cfei18/incubator-airflow,apache/airflow,Acehaidrey/incubator-airflow,apache/airflow,Acehaidrey/incubator-airflow,Acehaidrey/incubator-airflow,sekikn/incubator-airflow,apache/incubator-airflow,dhuang/incubator-airflow,Acehaidrey/incubator-airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,apache/airflow,bolkedebruin/airflow,apache/airflow,sekikn/incubator-airflow,lyft/incubator-airflow,nathanielvarona/airflow,lyft/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow