ListDiskIDs API

[ksubrmnn]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespaces from that line:

/kind api-change
/kind bug
/kind cleanup
/kind design
/kind documentation
/kind failing-test
/kind feature
/kind flake

What this PR does / why we need it:
This PR introduces the new v1beta1 version of the disk API. It also includes a ListDiskIDs function that currently returns page83 ID
Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

New v1beta1 disk API which includes new ListDiskIDs functionality

[k8s-ci-robot]

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[ddebroy]

This look great @ksubrmnn! One comment about exploring map for Disk IDs to keep things extensible. If that gets too complicated, what you have would be sufficient. Rest of the structure looks great!

[ksubrmnn]

/ok-to-test

[ddebroy]

A few naming nits. Otherwise looks great!

[ddebroy]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ddebroy, ksubrmnn

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