Upgrade unit test to be compatible with Python 3.8

[pgombar]

Description

• Fixed tests that were failing in Python 3.8
• Removed coverage output in Travis runs since the output was getting in the way of readability for unit test runs (codecov still runs on PRs and commits)
• Disabled tests that rely on mocking platform.dist. These tests and the method they are testing need to be updated once we figure out a good strategy to support distro and get away from platform.

Related to #1859.

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• New Unit tests were added for the changes made and Travis.CI is passing.

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[larohra]

Left some comments

[larohra]

Removed coverage output in Travis runs since the output was getting in the way of readability for unit test runs (codecov still runs on PRs and commits)

Thanks for removing coverage, it was definitely annoying to see the red cross even when Travis passed! That being said, I dont see the codecov results for in the PR anywhere. Is there a specific place I need to look for it?

[pgombar]

Removed coverage output in Travis runs since the output was getting in the way of readability for unit test runs (codecov still runs on PRs and commits)

Thanks for removing coverage, it was definitely annoying to see the red cross even when Travis passed! That being said, I dont see the codecov results for in the PR anywhere. Is there a specific place I need to look for it?

No, you're definitely right, by removing it from the yaml file, it removes the hook to run on each commit. I will revert the change then, I don't think there's a way where we can remove the output from individual Travis runs but still keep a hook on GitHub.

[larohra]

LGTM