Comment 5 for bug 1543050

Test failed because there was no samples for 'image' metric. That's why statistic request for this metric returns empty list and test failed with such error. Samples are collected every polling interval (10 minutes by default in MOS 8.0) and looks like test was launched before samples for 'image' metric was collected. Test may fail only on newly deployed environments and will not be reproduced on long-living environments.
This bug didn't reproduce in the next swarm run for 8.0-541 ISO, so move this bug to 'Won't fix' for 8.0 milestone.