Add k8s.volume.{name,type} attributes

[ChrsMark]

Fixes https://github.com/open-telemetry/semantic-conventions/issues/1164

Changes

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Add k8s.volume.{name,type} attributes.

From https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/v0.102.0/receiver/kubeletstatsreceiver/internal/kubelet/conventions.go#L7

Merge requirement checklist

• [x] CONTRIBUTING.md guidelines followed.
• [x] Change log entry added, according to the guidelines in When to add a changelog entry.
  • If your PR does not need a change log, start the PR title with [chore]
• [ ] schema-next.yaml updated with changes to existing conventions.

[ChrsMark]

@open-telemetry/semconv-k8s-approvers could you take a look?

[ChrsMark]

Thank's @lmolkova for the comments! Should be addressed now.

[ChrsMark]

Hey @jsuereth, could you take another look please?

[ChrsMark]

The failure is unrelated. I have filed https://github.com/open-telemetry/semantic-conventions/pull/1332 to fix this.