Automatic merge from submit-queue

Apply KubeProxyEndpointLagTimeout to ESIPP tests

Fixes #46533.

The previous construction of ESIPP tests is weird, so I redo it a bit.

A 30 seconds `KubeProxyEndpointLagTimeout` is introduced, as these tests ain't verifying performance, may be better to not make it too tight.

/assign @thockin 

**Release note**:

```release-note
NONE
```