Set API Version based on flag when discovery won't work

[JoelSpeed]

In openshift/machine-api-operator#992, we are introducing a new CRD which is in the machine.openshift.io/v1 group. This means that the server preferred version of the API is now v1 and not v1beta1. Because Machines don't yet exist in the v1` group, this means the CMA is currently broken on that PR.

E0223 11:12:04.550754       1 controller.go:134] csr-mwwzt: Failed to list machines: no matches for kind "Machine" in version "machine.openshift.io/v1"

If we were to merge the PR we would break the CMA across openshift.

To mitigate this, we must allow the version to be set manually and only rely on discovery when the preferred version is not set via a flag.

[alexander-demicev]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alexander-demichev

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[JoelSpeed]

/hold

@Fedosin is working on an alternative to this

[openshift-ci]

@JoelSpeed: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-aws-disruptive	a86872b	link	false	/test e2e-aws-disruptive
ci/prow/e2e-upgrade	a86872b	link	true	/test e2e-upgrade
ci/prow/e2e-gcp-operator	a86872b	link	false	/test e2e-gcp-operator

Full PR test history. Your PR dashboard.

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[JoelSpeed]

/close

We will use #157 instead

[openshift-ci]

@JoelSpeed: Closed this PR.

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In response to this:

/close

We will use #157 instead

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