Automatic merge from submit-queue (batch tested with PRs 46317, 48922, 50651, 50230, 47599)

Resources outside the `*kubernetes.io` namespace are integers and cannot be over-committed.

**What this PR does / why we need it**:

Fixes #50473 

Rationale: since the scheduler handles all resources except CPU as integers, that could just be the default behavior for namespaced resources.

cc @RenaudWasTaken @vishh 

**Release note**:

```release-note
Resources outside the `*kubernetes.io` namespace are integers and cannot be over-committed.
```