Description of problem:
While testing this metric, the value doesn't change when trying to check on priority class

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1.Add invalid labels to priorityclass kubevirt-cluster-critical
for i in {1..5}; do kubectl patch priorityclass kubevirt-cluster-critical --type='json' -p='[{"op": "add", "path": "/metadata/labels/test_label", "value": "testing_invalid_label_'"$i"'"}]'; done

2. check for metric value
3.

Actual results:
no datapoint found

Expected results:
should increase

Additional info: