Refactor CLI OIDC Integration Tests

[juniortaeza]

Desired Outcome

This pull request refactors the existing OIDC Integration Tests.

Implemented Changes

• removed code redundancies
• simplified the process of adding new tests

Changelog

• [ ] The CHANGELOG has been updated, or
• [X] This PR does not include user-facing changes and doesn't require a CHANGELOG update

Test coverage

• [ ] This PR includes new unit and integration tests to go with the code changes, or
• [X] The changes in this PR do not require tests

Documentation

• [ ] Docs (e.g. READMEs) were updated in this PR
• [ ] A follow-up issue to update official docs has been filed here: [insert issue ID]
• [X] This PR does not require updating any documentation

Behavior

• [ ] This PR changes product behavior and has been reviewed by a PO, or
• [X] These changes are part of a larger initiative that will be reviewed later, or
• [ ] No behavior was changed with this PR

Security

• [ ] Security architect has reviewed the changes in this PR,
• [X] These changes are part of a larger initiative with a separate security review, or
• [ ] There are no security aspects to these changes

[juniortaeza]

Thank you for the feedback @john-odonnell.

My most recent commit should address most/all of your feedback. In the meantime, I'll continue polishing things up (as I continue to learn new things with Go) :)

[codeclimate[bot]]

Code Climate has analyzed commit 5e26e55f and detected 1 issue on this pull request.

Here's the issue category breakdown:

Category	Count
Complexity	1

The test coverage on the diff in this pull request is 100.0% (50% is the threshold).

This pull request will bring the total coverage in the repository to 81.4% (0.0% change).

View more on Code Climate.