MAINT: SSL certificate validation deactivated

[jotelha]

Hello Tjelvar, this is not a true pull request but rather a note. In certain circumstances it might be useful to suppress SSL certificate checking on the client's side, i.e. for testing purposes in general or in case a safe connection through an SSH tunnel exists. I first thought I might be able to do this via some boto3 config file or environment variable, but did not find anything suitable documented onhttps://boto3.amazonaws.com/v1/documentation/api/latest/guide/configuration.html.

[tjelvar-olsson]

Think about implementing this with ENV VARS e.g. DTOOL_ECS_IGNORE_SSL

[jotelha]

What I have come across before for SSL certificate verification in HTTPS connections is

 export PYTHONHTTPSVERIFY=0

https://www.python.org/dev/peps/pep-0493/#feature-environment-based-configuration

but apparently that feature is Python 2 specific.