[Runpod] Support runpod as another provider for services

[kerthcet]

What would you like to be added:

Using the new API v2: https://docs.runpod.io/api-reference-v2/overview

Why is this needed:

Completion requirements:

This feature requires the following artifacts:

• Design doc
• API change
• Docs update

The artifacts should be linked in subsequent comments.