Found my issue. It was picking up an old version of boto. I removed the deb package and reinstalled the pip version.
$ strace -o boto_strace python -c 'import boto; print boto.__version__' 2.20.1 # apt-get remove python-boto # pip install --upgrade --force-reinstall boto $ python -c 'import boto; print boto.__version__' 2.39.0 -- You received this message because you are subscribed to the Google Groups "Ansible Project" group. To unsubscribe from this group and stop receiving emails from it, send an email to ansible-project+unsubscr...@googlegroups.com. To post to this group, send email to ansible-project@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/edadfc73-0051-4e21-a8bf-7075aa057bdd%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.