fix: add VolumeStats cache to avoid massive statfs calls

[andyzhangx]

What type of PR is this?
/kind bug

What this PR does / why we need it:
fix: add VolumeStats cache to avoid massive statfs calls

This PR adds a 10min cache for VolumeStats per volumeID, that could avoid massive statfs calls

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

I1203 14:10:50.070801       1 utils.go:76] GRPC call: /csi.v1.Node/NodeGetVolumeStats
I1203 14:10:50.070883       1 utils.go:77] GRPC request: {"volume_id":"f53b93510cc4d479080fad5.file.core.windows.net/pvc-35cf7e8d-8343-44b5-a9d3-bb71a29b00d0#pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40#","volume_path":"/var/lib/kubelet/pods/4574ee48-11c5-4abc-8369-a7f52d379b74/volumes/kubernetes.io~csi/pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40/mount"}
I1203 14:10:50.084101       1 utils.go:83] GRPC response: {"usage":[{"available":107356094464,"total":107374182400,"unit":1,"used":18087936},{"unit":2}]}
I1203 14:12:06.787682       1 utils.go:76] GRPC call: /csi.v1.Node/NodeGetVolumeStats
I1203 14:12:06.787730       1 utils.go:77] GRPC request: {"volume_id":"f53b93510cc4d479080fad5.file.core.windows.net/pvc-35cf7e8d-8343-44b5-a9d3-bb71a29b00d0#pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40#","volume_path":"/var/lib/kubelet/pods/4574ee48-11c5-4abc-8369-a7f52d379b74/volumes/kubernetes.io~csi/pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40/mount"}
I1203 14:12:06.787786       1 nodeserver.go:305] NodeGetVolumeStats: volume stats for volume f53b93510cc4d479080fad5.file.core.windows.net/pvc-35cf7e8d-8343-44b5-a9d3-bb71a29b00d0#pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40# path /var/lib/kubelet/pods/4574ee48-11c5-4abc-8369-a7f52d379b74/volumes/kubernetes.io~csi/pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40/mount is cached
I1203 14:12:06.787816       1 utils.go:83] GRPC response: {"usage":[{"available":107356094464,"total":107374182400,"unit":1,"used":18087936},{"unit":2}]}
I1203 14:13:29.138315       1 utils.go:76] GRPC call: /csi.v1.Node/NodeGetVolumeStats
I1203 14:13:29.138435       1 utils.go:77] GRPC request: {"volume_id":"f53b93510cc4d479080fad5.file.core.windows.net/pvc-35cf7e8d-8343-44b5-a9d3-bb71a29b00d0#pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40#","volume_path":"/var/lib/kubelet/pods/4574ee48-11c5-4abc-8369-a7f52d379b74/volumes/kubernetes.io~csi/pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40/mount"}
I1203 14:13:29.138480       1 nodeserver.go:305] NodeGetVolumeStats: volume stats for volume f53b93510cc4d479080fad5.file.core.windows.net/pvc-35cf7e8d-8343-44b5-a9d3-bb71a29b00d0#pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40# path /var/lib/kubelet/pods/4574ee48-11c5-4abc-8369-a7f52d379b74/volumes/kubernetes.io~csi/pvc-6b9fb44c-dc30-48d5-b19a-a81d5b9cbf40/mount is cached
I1203 14:13:29.138495       1 utils.go:83] GRPC response: {"usage":[{"available":107356094464,"total":107374182400,"unit":1,"used":18087936},{"unit":2}]}

Release note:

fix: add VolumeStats cache to avoid massive statfs calls

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx

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[andyzhangx]

/test pull-csi-driver-smb-e2e-capz

[andyzhangx]

/test pull-csi-driver-smb-e2e-capz

[k8s-ci-robot]

@andyzhangx: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-csi-driver-smb-e2e-capz	f1c7cde	link	false	/test pull-csi-driver-smb-e2e-capz

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