CSI plugin expected counts reflect expected instance counts more accurately

[langmartin]

CSI plugin Expected counts are currently based only on the plugin fingerprint data from clients, including both healthy and unhealthy fingerprints. The count would be more useful for operators if it reflected the expectation from the jobs

• for service jobs (i.e. controllers) the count from the job configuration
• for system jobs (i.e. nodes) the number of running allocations + blocked evaluations

[github-actions]

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