The framework in the admission package is general enough to support admission control for multi-tenant KV nodes and single-tenant SQL nodes, however we need:

• proper integration for multi-tenant settings, including creation of the appropriate RequestGranter, and calls to admission.WorkQueue with the correct parameters (like the tenant-id).
• testing that this works as expected in multi-tenant environments.
• admission control: implementation of the sqlNodeCPUOverloadIndicator for single-tenant SQL nodes #79425

Epic: CRDB-10304

Jira issue: CRDB-7811