Automatic merge from submit-queue (batch tested with PRs 45610, 47628)

Replace capacity with allocatable to calculate pod resource

It is not accurate to use capacity to do the calculation.



**What this PR does / why we need it**:
The currently cpu resource calculation for a pod in end2end test is incorrect.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
fixes #47627

**Special notes for your reviewer**:
More details about capacity and allocatable:
https://github.com/kubernetes/community/blob/master/contributors/design-proposals/node-allocatable.md

**Release note**:

NONE