Update grafana/grafana Docker tag to v7.1.1
Update grafana/grafana Docker tag to v7.1.1

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