🌱 TestReconcileMachinePhases: use apireader to directly talk to apiserver

[ivelichkovich]

What this PR does / why we need it: reduce flake in envtest test

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #12785

use APIReader with helper Get function. My comment in the issue explains what I'm thinking is going. For some of the flake you can see the logs reconcile so the status must be set to i.e. Pending. Instead the phase is empty and reads as Unknown. Completed reconciliations would set the status and the logs show those completing so the cache must be stale on the check where we Get the object and validate the status. This adds helper function and uses it for validation where it queries directly against apiserver.

Note: comments on APIReader say to use it sparingly. I would not suggest disabling cache in controller clients during testing however for validation of state after a test run is complete it should be safe to use and reduce flake.

[k8s-ci-robot]

Hi @ivelichkovich. Thanks for your PR.

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[sbueringer]

Thx!

Fine for me to give this a try, but with the surrounding Eventually I don't think this will fix the test flake

/ok-to-test
/area machine
/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: fc418d718df1bb39df0ec970b4bc1d6552deaaed

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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