WIP: Nutanix platform passthrough

[yannickstruyf3]

Adding the Nutanix Platform to the cloud-credential-operator. Supported mode is passthrough.

PR still WIP since openshift/api PR containing Nutanix platform is not yet merged to master.

[openshift-ci]

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[openshift-ci]

@yannickstruyf3: 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	e7220c4	link	true	/test e2e-aws
ci/prow/coverage	e7220c4	link	true	/test coverage
ci/prow/unit	e7220c4	link	true	/test unit
ci/prow/images	e7220c4	link	true	/test images
ci/prow/verify	e7220c4	link	true	/test verify
ci/prow/e2e-upgrade	e7220c4	link	true	/test e2e-upgrade

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[joelddiaz]

I haven't looked at the code, but just looking at the list of files added/modified I suspect someone has steered you in the wrong direction...

For new platforms, we are not adding in-cluster operator handling of platform credentials. The "new" thing to do is to run the cloud-cred-operator in "Manual" mode, and have some external tooling (this repo has ccoctl for that purpose) to do the pre-installation/pre-upgrade credentials management.
See the IBMCloud and Alibaba cloud PRs for examples of the "new way".
#412
#356

The docs probably need some updating, but it does talk about supporting "Manual" mode at a minimum and Mint/Passthrough as optional: https://github.com/openshift/cloud-credential-operator/blob/master/docs/adding-new-cloud-provider.md

[openshift-ci]

@yannickstruyf3: PR needs rebase.

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[thunderboltsid]

@joelddiaz Can you take a look at #450 ?

[akhil-rane]

We have a separate PR #450 for Nutanix support. Closing this PR.