yum module is not supported with Python 3

[xkrt]

Hi!

Documentation of Ansible's yum module says:

This module only works on Python 2. If you require Python 3 support see the dnf module.

but ansible-datadog uses yum unconditionally, see

ansible-datadog/tasks/pkg-redhat/install-pinned.yml

Line 3 in cc91795

yum:

and

ansible-datadog/tasks/pkg-redhat/install-latest.yml

Line 3 in cc91795

yum:

Python 2 was retired at January 1, 2020 and I'm working on switching to Python 3 as probably many others.

I believe ansible-datadog should use dnf module instead of yum if the current interpreter is 3.

[KSerrania]

Hi @xkrt!

Thanks for the report, and sorry for the (very) late answer! I opened #301 which should fix this issue. Feel free to comment if you think there's anything that could be improved there!