ena-dts should update supported python version

[sakaia]

ena-dts currently uses python2. it need to be updated to use python3

amzn-ec2-ena-utilities/ena-dts/framework/main.py

Line 1 in 32b0a1a

#!/usr/bin/env python2

Reference
https://www.python.org/doc/sunset-python-2/

[shaibran]

Hi, thank you, we are aware of this.
A new ENA-DTS release with additional capabilities is nearly complete, once we add python3 support we will publish it to our GitHub