Automatic merge from submit-queue (batch tested with PRs 41331, 45591, 45600, 45176, 45658)

ParsePodFullName():code robustness

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

ParsePodFullName():code robustness

if pod name or namespace name is null, the function can handle it.
Meanwhile update unit test 

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```