feat: enable metrics for csi-provisioner

[hichem-belhocine]

What is this PR about? / Why do we need it?
Enable metrics for csi-provisioner

What testing is done?
Manually tested by adding --metrics-address and --metrics-path args and port for metrics to the csi-provisioner container

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: hichem-belhocine
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[k8s-ci-robot]

Hi @hichem-belhocine. 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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[hichem-belhocine]

/auto-cc
Could you review please?
@justinsb
@nckturner
@Ashley-wenyizha