SC can set min PV size and condition for MAX PV Size limit

[badri-pathak]

Pull request checklist

Pull request type

Please check the type of change your PR introduces:

• Bugfix
• Feature Enhancement
• Test Automation
• Code Refactoring (no functional changes, no api changes)
• Build related changes
• Community Operator listing
• Other (please describe):

What is the current behavior?

What is the new behavior?

• PV size higher than the scale-allowed size(999999999999999Ki) is not allowed.
• (Optional) Storage class can be configured to set min PV size. If PV requested with lesser value than the SC limit, then minSize of the SC will be used.
  apiVersion: storage.k8s.io/v1 kind: StorageClass metadata: name: ibm-spectrum-scale-csi-fileset namespace: ibm-spectrum-scale-csi-driver provisioner: spectrumscale.csi.ibm.com parameters: volBackendFs: "fs1" pvMinSize: 3Gi reclaimPolicy: Delete

How risky is this change?

• Small, isolated change
• Medium, requires regression testing
• Large, requires functional and regression testing

[badri-pathak]

Image: quay.io/badri_pathak/ibm-spectrum-scale-csi-driver:pv_minsize_requirement_v3

[badri-pathak]

This issue will be handled in this PR: #800