Implement Azure Workload Identity

Summary:

Similar to work done for AWS STS (https://issues.redhat.com/browse/CCO-286), enable in CCO a new workflow (see EP PR [here|https://github.com/openshift/enhancements/pull/1339)] to detect when temporary authentication tokens (TAT) (workload identity credential) are in use on a cluster. {{}}

Important details:

Detection that workload identity credentials (TAT) are in use will mean CCO is in Manual mode and the Service Account has a non-empty Service Account Issuer field.

This workflow will be triggered by additions to the CredentialsRequest for an operator:

spec.cloudTokenString
spec.cloudTokenPath

Acceptance Criteria:

When OCP is running on an Azure platform with temporary authentication tokens enabled, CCO will detect this and on the presence of properly annotated CredentialsRequest create a Secret to allow Azure SDK calls for Azure resources to succeed.