Fix Prometheus tests for hardware.
Fix Prometheus tests for hardware.

shivarammysore/faucet,trungdtbk/faucet,REANNZ/faucet,trungdtbk/faucet,faucetsdn/faucet,anarkiwi/faucet,shivarammysore/faucet,faucetsdn/faucet,REANNZ/faucet,gizmoguy/faucet,gizmoguy/faucet,mwutzke/faucet,anarkiwi/faucet,mwutzke/faucet