feat(tracing): use OpenTelemetry env vars where possible (ipfs#8875)

This removes some of the env vars added in f855bfe, so that go-ipfs
is as consistent with standard OpenTelemetry env vars as possible.

go.mod

@@ -100,27 +100,29 @@ require (
 	github.com/multiformats/go-multihash v0.1.0
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pkg/errors v0.9.1
-	github.com/prometheus/client_golang v1.11.0
-	github.com/stretchr/testify v1.7.0
+	github.com/prometheus/client_golang v1.12.1
+	github.com/prometheus/common v0.33.0 // indirect
+	github.com/stretchr/testify v1.7.1
 	github.com/syndtr/goleveldb v1.0.0
 	github.com/wI2L/jsondiff v0.2.0
 	github.com/whyrusleeping/go-sysinfo v0.0.0-20190219211824-4a357d4b90b1
 	github.com/whyrusleeping/multiaddr-filter v0.0.0-20160516205228-e903e4adabd7
 	go.opencensus.io v0.23.0
-	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.27.0
-	go.opentelemetry.io/otel v1.2.0
-	go.opentelemetry.io/otel/exporters/jaeger v1.2.0
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.2.0
-	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.2.0
-	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.2.0
-	go.opentelemetry.io/otel/sdk v1.2.0
-	go.opentelemetry.io/otel/trace v1.2.0
+	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.31.0
+	go.opentelemetry.io/otel v1.6.3
+	go.opentelemetry.io/otel/exporters/jaeger v1.6.3
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc v1.6.3
+	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.6.3
+	go.opentelemetry.io/otel/exporters/stdout/stdouttrace v1.6.3
+	go.opentelemetry.io/otel/exporters/zipkin v1.6.3
+	go.opentelemetry.io/otel/sdk v1.6.3
+	go.opentelemetry.io/otel/trace v1.6.3
 	go.uber.org/dig v1.14.0
 	go.uber.org/fx v1.16.0
 	go.uber.org/zap v1.21.0
 	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/sys v0.0.0-20211025112917-711f33c9992c
+	golang.org/x/sys v0.0.0-20220408201424-a24fb2fb8a0f
 )
 
 require (