cmd/tsdbrelay: fix http: proxy error: EOF due to mixing Content-Encoding headers
cmd/tsdbrelay: fix http: proxy error: EOF due to mixing Content-Encoding headers

seekingalpha/bosun,alienth/bosun,leapar/bosun,seekingalpha/bosun,csmith-palantir/bosun,csmith-palantir/bosun,bosun-monitor/bosun,leapar/bosun,csmith-palantir/bosun,alienth/bosun,mhenderson-so/bosun,bookingcom/bosun,seekingalpha/bosun,bosun-monitor/bosun,alienth/bosun,leapar/bosun,mhenderson-so/bosun,csmith-palantir/bosun,alienth/bosun,mhenderson-so/bosun,seekingalpha/bosun,alienth/bosun,seekingalpha/bosun,csmith-palantir/bosun,bosun-monitor/bosun,leapar/bosun,bookingcom/bosun,mhenderson-so/bosun,simnv/bosun,bookingcom/bosun,simnv/bosun,bosun-monitor/bosun,simnv/bosun,bookingcom/bosun,bosun-monitor/bosun,mhenderson-so/bosun,simnv/bosun,bookingcom/bosun,alienth/bosun,leapar/bosun,simnv/bosun,leapar/bosun,mhenderson-so/bosun,simnv/bosun,bosun-monitor/bosun,csmith-palantir/bosun,seekingalpha/bosun,bookingcom/bosun