enh: Cluster autoscaler configuration to improve cluster utilization

[mglotov]

Prerequisites

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• I am running the latest version
• I checked the documentation and found no answer
• I checked to make sure that this issue has not already been filed

Expected Behavior

Cluster Autoscaler doesn't skip nodes with local storage and scales-down instances where utilization is less than 70%.

Current Behavior

Cluster Autoscaler doesn't scale-down instances with local storage (hostPath, emptyDir) and scales-down instances where utilization is less than 50% (default value).