Move basic e2e tests to new e2e and add upgrade scenario

[OliverMKing]

Description

• Moves a few tests to the new testing framework.
• Adds framework for testing different operator versions and configurations
• Swaps around a few things that weren't working (like how we track things happening in private clusters with the aks invoke api). AKS invoke api isn't good for long running operations.

What's left for e2e

• Need to move a few more tests over (trivial since tests are fully working here)
• Need to setup GitHub Action workflow to run tests
• Add a little more documentation to how to use it after GitHub workflow is done. Add notes to release steps for adding new releases here.

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update

How Has This Been Tested?

Tested locally. You can too by running

cd testing/e2e/
go run ./main.go infra --subscription=<subscription> --tenant=<tenant> --names="basic cluster"
go run ./main.go deploy

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have made corresponding changes to the documentation
• [x] My changes generate no new warnings
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules

[coveralls]

Pull Request Test Coverage Report for Build 6164919630

• 5 of 5 (100.0%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.02%) to 88.949%

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Totals
Change from base Build 6089997898:	0.02%
Covered Lines:	1964
Relevant Lines:	2208

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💛 - Coveralls

[OliverMKing]

/ok-to-test sha=b43d23b