feat: added operating-system input variable

[Khuzaima05]

Description

Add operating-system input variable for OCP 4.15 and beyond (RHCoreOS now an option)

issue: #429

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[Khuzaima05]

/run pipeline

[Khuzaima05]

/run pipeline

[Khuzaima05]

Pipeline is failing with the following error:

Error: Request failed with status code: 400, ServerErrorResponse: {"incidentID":"524af746-bd3d-4e16-9883-9ee890cc7813,524af746-bd3d-4e16-9883-9ee890cc7813","code":"E1437","description":"The action cannot be completed because it would reduce the worker pool size to below the cluster's minimum requirement of 2 workers.","type":"BadRequest"}

Other PR pipeline also facing same error.

[Khuzaima05]

/run pipeline

[Khuzaima05]

/run pipeline

[ocofaigh]

This needs to be exposed in fscloud submodule too

[Khuzaima05]

/run pipeline

[Khuzaima05]

/run pipeline

[Khuzaima05]

/run pipeline

[Khuzaima05]

/run pipeline

[terraform-ibm-modules-ops]

🎉 This PR is included in version 3.25.0 🎉

The release is available on GitHub release

Your semantic-release bot 📦🚀

[vburckhardt]

Missing the aspect about pool - https://registry.terraform.io/providers/IBM-Cloud/ibm/latest/docs/resources/container_vpc_worker_pool#operating_system