Merge pull request #37667 from bruceauyeung/k8s-branch-eliminate-duplicated-codes-in-estimateContainer-method

Automatic merge from submit-queue

eliminate duplicated codes in estimateContainer method

**What this PR does / why we need it**:
there are two code snippets about when to estimate resource for cpu and mem are duplicated, i extracted them into method `getEstimationIfNeeded` method
Signed-off-by: bruceauyeung <ouyang.qinhua@zte.com.cn>