new: Add InfoModule class to simplify info module implementations

[lgarber-akamai]

📝 Description

This change adds a shared InfoModuleBase class that allows for the easy creation of info modules with very little boilerplate.

This change also switches from directly calling pytest to using the ansible-test units wrapper.

✔️ How to Test

make TEST_ARGS="-v instance_basic" test
make TEST_ARGS="-v stackscript_info" test

[yec-akamai]

Great work! Tests passed locally 🎉

[amisiorek-akamai]

Tests pass locally with the exception of one from instance_basic, just want to double check that this is outside our scope.

TASK [instance_basic : Create a Linode instance with additional ips and without a root password] *** fatal: [testhost]: FAILED! => {"changed": false, "msg": "Error from Linode API: [400] Additional IPv4 addresses require technical justification. Please contact support describing your requirement"}