fix: reduce crp throttling in attach disk scenario

[andyzhangx]

What type of PR is this?
/kind bug

What this PR does / why we need it:
fix: reduce crp throttling in attach disk scenario
original CacheReadTypeForceRefresh is not necessary since once attach/detach completed, cache is already cleaned, this operation could clean cache for every disk attach, finally cause crp throttling, e.g.

I0508 05:26:08.763336       1 utils.go:95] GRPC call: /csi.v1.Controller/ControllerPublishVolume
I0508 05:26:08.763360       1 utils.go:96] GRPC request: {"node_id":"aks-agentpool-15002531-vmss000000","volume_capability":{"AccessType":{"Mount":{"fs_type":"ext4"}},"access_mode":{"mode":1}},"volume_context":{"skuname":"StandardSSD_LRS","storage.kubernetes.io/csiProvisionerIdentity":"1620324123891-8081-disk.csi.azure.com"},"volume_id":"/subscriptions/xxx/resourceGroups/aks55h93-nodegroup/providers/Microsoft.Compute/disks/pvc-f0dfbac9-6737-4462-98ff-1d8d793a0021"}
E0508 05:26:08.782792       1 azure_vmss.go:700] VirtualMachineScaleSetVMsClient.List failed: &{true 0 2021-05-08 05:29:59.777620028 +0000 UTC m=+1787.759114644 azure cloud provider throttled for operation VMSSVMList with reason "client throttled"}
E0508 05:26:08.782826       1 azure_controller_common.go:445] error of getting data disks for node "aks-agentpool-15002531-vmss00000n": Retriable: true, RetryAfter: 230s, HTTPStatusCode: 0, RawError: azure cloud provider throttled for operation VMSSVMList with reason "client throttled"
E0508 05:26:08.782842       1 controllerserver.go:463] Attach volume "/subscriptions/xxx/resourceGroups/aks55h93-nodegroup/providers/Microsoft.Compute/disks/pvc-d48cabdc-9985-411a-a31d-769d19fd7595" to instance "aks-agentpool-15002531-vmss00000n" failed with Retriable: true, RetryAfter: 230s, HTTPStatusCode: 0, RawError: azure cloud provider throttled for operation VMSSVMList with reason "client throttled"

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Release note:

fix: reduce crp throttling in attach disk scenario

[andyzhangx]

/retest

[ZeroMagic]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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[andyzhangx]

/retest

[andyzhangx]

/retest