opentsdb: treat minute durations as minutes not hours
opentsdb: treat minute durations as minutes not hours

augporto/bosun,CheRuisiBesares/bosun,csmith-palantir/bosun,melifaro/bosun,bosun-monitor/bosun,melifaro/bosun,bookingcom/bosun,bosun-monitor/bosun,mhenderson-so/bosun,leapar/bosun,csmith-palantir/bosun,melifaro/bosun,CheRuisiBesares/bosun,Skyscanner/bosun,bookingcom/bosun,seekingalpha/bosun,bookingcom/bosun,mhenderson-so/bosun,TrentScholl/bosun,TrentScholl/bosun,simnv/bosun,bookingcom/bosun,mhenderson-so/bosun,alienth/bosun,Skyscanner/bosun,leapar/bosun,leapar/bosun,leapar/bosun,simnv/bosun,bosun-monitor/bosun,bosun-monitor/bosun,CheRuisiBesares/bosun,CheRuisiBesares/bosun,augporto/bosun,alienth/bosun,GROpenSourceDev/bosun,Skyscanner/bosun,alienth/bosun,augporto/bosun,alienth/bosun,augporto/bosun,bookingcom/bosun,mhenderson-so/bosun,leapar/bosun,Skyscanner/bosun,seekingalpha/bosun,GROpenSourceDev/bosun,simnv/bosun,mhenderson-so/bosun,simnv/bosun,Skyscanner/bosun,GROpenSourceDev/bosun,TrentScholl/bosun,TrentScholl/bosun,augporto/bosun,alienth/bosun,csmith-palantir/bosun,TrentScholl/bosun,csmith-palantir/bosun,simnv/bosun,csmith-palantir/bosun,csmith-palantir/bosun,bookingcom/bosun,seekingalpha/bosun,seekingalpha/bosun,melifaro/bosun,alienth/bosun,mhenderson-so/bosun,GROpenSourceDev/bosun,seekingalpha/bosun,bosun-monitor/bosun,TrentScholl/bosun,GROpenSourceDev/bosun,CheRuisiBesares/bosun,GROpenSourceDev/bosun,bosun-monitor/bosun,melifaro/bosun,melifaro/bosun,leapar/bosun,seekingalpha/bosun,simnv/bosun,augporto/bosun,CheRuisiBesares/bosun,Skyscanner/bosun