tools/cardiff/test_perf_level.py: fix test
tools/cardiff/test_perf_level.py: fix test

redhat-cip/edeploy,enovance/edeploy,lebauce/edeploy,lebauce/edeploy,enovance/edeploy,redhat-cip/edeploy,lebauce/edeploy,redhat-cip/edeploy,enovance/edeploy,enovance/edeploy,redhat-cip/edeploy,lebauce/edeploy