refactored airflow s3 hook to use boto3. Mostly unchanged otherwise.
refactored airflow s3 hook to use boto3. Mostly unchanged otherwise.

- It takes fewer config formats for now
- Designed to work with the same config as aws_lambda
brandsoulmates/incubator-airflow,brandsoulmates/incubator-airflow,brandsoulmates/incubator-airflow,brandsoulmates/incubator-airflow