feat: use common port for all metrics

[aramase]

What this PR does / why we need it:

• Use controller-runtime prom registry to init exporter. This will publish controller-runtime and driver metrics to the same url http://localhost:<metrics addr>/metrics

Which issue(s) this PR fixes (optional, using fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when the PR gets merged):
Fixes #411

Special notes for your reviewer:

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aramase

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• OWNERS [aramase]

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[aramase]

/kind feature

[ritazh]

/lgtm