Add exporter test

[marctc]

Added test that validates that we are exporting metrics as we defined in test_metrics.txt.
This would help in refactors in order to identify if we lost any metrics. It works using createSim
which creates a vsphere sim on the fly. This could be helpful in the future to add more tests.

This fixes #25

[marctc]

For some reason drone is not able to run the tests. @rlankfo could you take a look?

[rlankfo]

For some reason drone is not able to run the tests. @rlankfo could you take a look?

It looks like the trigger is configured only to run on tags. I assume we probably want this trigger to be the same as the linter:

trigger:
  event:
    - push
    - pull_request
    - tag
  ref:
    - refs/heads/main
    - refs/pull/*/head
    - refs/tags/**

[rlankfo]

awesome! 🙌 thanks for putting this together @marctc