When "production" image is prepared for, only amazon and google providers are installed from sources.

**Apache Airflow version**:

master

**What you expected to happen**:

All providers should be installed

**How to reproduce it**:

```
./breeze --production-image --python 3.6
```

Then:

```
./breeze --production-image --python 3.6 shell bash
```

then

```
ls -la ~/.local/lib/python3.6/site-packages/airflow/providers/

amazon
google

```


UPDATE:

They are not even installed: 

```
.
./amazon
./amazon/aws
./amazon/aws/hooks
./amazon/aws/hooks/batch_waiters.json
./google
./google/cloud
./google/cloud/example_dags
./google/cloud/example_dags/example_bigquery_query.sql
./google/cloud/example_dags/example_cloud_build.yaml
./google/cloud/example_dags/example_spanner.sql
```

setup.py
"""Perform the Airflow package setup."""
    install_providers_from_sources = os.getenv('INSTALL_PROVIDERS_FROM_SOURCES')
    exclude_patterns = (
        []
        if install_providers_from_sources and install_providers_from_sources == 'true'
        else ['airflow.providers', 'airflow.providers.*']
    )
    write_version()
    setup(
        name='apache-airflow',
        description='Programmatically author, schedule and monitor data pipelines',
        long_description=long_description,
        long_description_content_type='text/markdown',
        license='Apache License 2.0',
        version=version,