Fix typos in gauge
Fix typos in gauge

* Fixes indent bug causing a crash when a datapath leaves
* Fixes a typo bug when not using influxdb

mwutzke/faucet,REANNZ/faucet,shivarammysore/faucet,asmltd/faucet,trentindav/faucet,wackerly/faucet,trentindav/faucet,gizmoguy/faucet,asmltd/faucet,isomer/faucet,gwacter/faucet,faucetsdn/faucet,faucetsdn/faucet,trungdtbk/faucet,asmltd/faucet,anarkiwi/faucet,byllyfish/faucet,Bairdo/faucet,byllyfish/faucet,asmltd/faucet,anarkiwi/faucet,shivarammysore/faucet,Bairdo/faucet,gwacter/faucet,mwutzke/faucet,REANNZ/faucet,isomer/faucet,trungdtbk/faucet,asmltd/faucet,gizmoguy/faucet,wackerly/faucet