Add tracer option argument to global Tracer function (open-telemetry#1902)

* Add tracer opt arg to global Tracer func

* Update PR number

Author: MrAlias

CHANGELOG.md

@@ -43,6 +43,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 - Unembed `SpanContext` in `Link`. (#1877)
 - Semantic conventions are now generated from the specification YAML. (#1891)
 - Spans created by the global `Tracer` obtained from `go.opentelemetry.io/otel`, prior to a functioning `TracerProvider` being set, now propagate the span context from their parent if one exists. (#1901)
+- The `"go.opentelemetry.io/otel".Tracer` function now accepts tracer options. (#1902)
 - Move the `go.opentelemetry.io/otel/unit` package to `go.opentelemetry.io/otel/metric/unit`. (#1903)
 
 ### Deprecated

trace.go

@@ -22,9 +22,9 @@ import (
 // Tracer creates a named tracer that implements Tracer interface.
 // If the name is an empty string then provider uses default name.
 //
-// This is short for GetTracerProvider().Tracer(name)
-func Tracer(name string) trace.Tracer {
-	return GetTracerProvider().Tracer(name)
+// This is short for GetTracerProvider().Tracer(name, opts...)
+func Tracer(name string, opts ...trace.TracerOption) trace.Tracer {
+	return GetTracerProvider().Tracer(name, opts...)
 }
 
 // GetTracerProvider returns the registered global trace provider.