Second fix for Nutanix agent ssl verify problems

[Yogibaer75]

I can only push against 2.3 as the last non working changes are only included there. The master branch is also broken at this moment as the last fix was not applied there.

More about this problem with "requests.session.verify" and set environment "REQUEST_CA_BUNDLE" you can find here. https://github.com/psf/requests/issues/3829

I would be good to have a working version before conference as this is featured there in some presentations.