Convert AP-ALB tests to testinfra

[fititnt]

• Testinfra documentation:
  • https://testinfra.readthedocs.io/en/latest/
• Testinfra API (to reuse on other codes)
  • https://testinfra.readthedocs.io/en/latest/api.html
• Testinfra examples
  • https://testinfra.readthedocs.io/en/latest/examples.html

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Is a fact that well written idempotent Ansible Roles/Playbooks are aready good for testing the infrastructure actual state. For just test without apply, there is even the Check Mode (“Dry Run”).

But here with AP-ALB is more complex than average individual Ansible Role, even when running in a single node. One of the implications of this is that, even if is just to check what ports are used by what service become important. We already have some drafts on files/alb-cli-tools but writing more complex shell scripts to do some quick testing may be less portable.

Because of the Implementation of Ansible Molecule on AP-ALB & travis-ci integration #2, we're already ideally would need to create some tests to check if all is ok, so I will take the oportunity to already use Testinfra on more than just the continuos integration testing.