[WIP] fix: optimizations and fstype fix from intree to csi

[hasethuraman]

What type of PR is this?

fstype was not inherited from intree pv to csi
also optimized by caching the jsons to avoid repeated kubectl queries in the interest of maintenance window to reduce application downtime

/kind bug

What this PR does / why we need it:

Without this PR, the csi pv is failing to mount due to filesystem mismatch
And without this, in a scale volume, the script overhead is high before trigger the migration

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:

Release note:

none

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: hasethuraman
Once this PR has been reviewed and has the lgtm label, please assign landreasyan for approval. For more information see the Code Review Process.

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[k8s-ci-robot]

Hi @hasethuraman. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[hasethuraman]

For some reason I dont see the edit icon to remove [WIP] from PR title. Could someone help to remove it? Thanks

@landreasyan @andyzhangx