adds datacrunch provider

[maaft]

What type of PR is this?

/kind feature

What this PR does / why we need it:

Adds support for datacrunch provider

Which issue(s) this PR fixes:

Fixes #8350

Special notes for your reviewer:

Since I do not work for datacrunch, it would be probably a good idea if anyone from them could review this PR.

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

I've added a README in cluster-autoscaler/cloudprovider/datacrunch/README.md

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: maaft (c3208e9, 2f55d90, 64b0304, 734e8fb, 28ba4e8, 97eab8b, 9c40847, 2529cda, 79140b0, a453186, ef3b1ee)

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @maaft. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[maaft]

FYI; currently refactoring and simplifying the startup script logic. Will push another commit soon.

[maaft]

@aleksandra-malinowska @vadasambar anything I can do to get this merged?

[k8s-ci-robot]

PR needs rebase.

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[jackfrancis]

@maaft you'll have to add a datacrunch-specific build tag, see how this recently added provider did it:

• https://github.com/kubernetes/autoscaler/pull/8398/files#diff-684f2b38bf023c9df1a4dbc08b3bee81ccf015fc547414087f5befd49abe0570
• https://github.com/kubernetes/autoscaler/pull/8398/files#diff-9ce2c5ef6f6102dbcceb34f210a836e06ddf9b4e998d7b2a346c3fa166590935

Additionally, you'll need to ship an OWNERS file so that the provider source can be self-maintained going forward, e.g.:

• https://github.com/kubernetes/autoscaler/pull/8398/files#diff-84bd7bb077a3aab8fd9cdd414c259ea4e749dc27e515fede3340b94b460a93f5