[chore] Enable goleak for all (passing) tests (#9173)

**Description:**
It was suggested that we add the [goleak
package](https://pkg.go.dev/go.uber.org/goleak) to every test in core.
This change adds `goleak` to every package that is succeeds with goleak.
There a number that are not successful, the full list of which I've
posted in the bug.

I generated these files using a shell script to copy a template
`main_test.go` file into each package, then modified the package name.
I'm sure there was a better way to automate this, but it worked well
enough at this point. Here's the script:
 ```
cp ./main_test.go $1

PACKAGE_NAME=$(basename $1)

sed -i '' -e "s|package component|package $PACKAGE_NAME|g"
$1/main_test.go

pushd . && cd $1 && go mod tidy 
go test -v .
```
Usage example:
```
$ ./add_leak_test reciever/scrapererror
```


**Link to tracking Issue:**
#9165

**Testing:**
All added tests are passing, but there are a number failing. Note that there's no sign of `goleak` running until it fails.

client/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package client
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

cmd/builder/go.mod

@@ -15,6 +15,7 @@ require (
 	github.com/spf13/cobra v1.8.0
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.8.4
+	go.uber.org/goleak v1.2.0
 	go.uber.org/multierr v1.11.0
 	go.uber.org/zap v1.26.0
 )

cmd/builder/internal/builder/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package builder
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

cmd/builder/internal/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package internal
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

cmd/mdatagen/go.mod

@@ -36,7 +36,7 @@ require (
 	go.opentelemetry.io/collector/consumer v0.91.0 // indirect
 	go.opentelemetry.io/collector/featuregate v1.0.0 // indirect
 	go.opentelemetry.io/otel v1.21.0 // indirect
-	golang.org/x/net v0.18.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
 	golang.org/x/sys v0.15.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20231002182017-d307bd883b97 // indirect
 	google.golang.org/grpc v1.60.1 // indirect

component/componenttest/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package componenttest
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

component/go.mod

@@ -9,6 +9,7 @@ require (
 	go.opentelemetry.io/collector/pdata v1.0.0
 	go.opentelemetry.io/otel/metric v1.21.0
 	go.opentelemetry.io/otel/trace v1.21.0
+	go.uber.org/goleak v1.3.0
 	go.uber.org/multierr v1.11.0
 	go.uber.org/zap v1.26.0
 )

component/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package component
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/configauth/go.mod

@@ -7,6 +7,7 @@ require (
 	go.opentelemetry.io/collector/component v0.91.0
 	go.opentelemetry.io/collector/extension v0.91.0
 	go.opentelemetry.io/collector/extension/auth v0.91.0
+	go.uber.org/goleak v1.3.0
 )
 
 require (

config/configauth/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package configauth
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/configcompression/go.mod

@@ -2,7 +2,10 @@ module go.opentelemetry.io/collector/config/configcompression
 
 go 1.20
 
-require github.com/stretchr/testify v1.8.4
+require (
+	github.com/stretchr/testify v1.8.4
+	go.uber.org/goleak v1.3.0
+)
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect

config/configcompression/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package configcompression
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/configgrpc/go.mod

@@ -17,6 +17,7 @@ require (
 	go.opentelemetry.io/collector/pdata v1.0.0
 	go.opentelemetry.io/contrib/instrumentation/google.golang.org/grpc/otelgrpc v0.46.1
 	go.opentelemetry.io/otel v1.21.0
+	go.uber.org/goleak v1.3.0
 	go.uber.org/zap v1.26.0
 	google.golang.org/grpc v1.60.1
 )
@@ -65,7 +66,7 @@ require (
 	go.opentelemetry.io/otel/sdk/metric v1.21.0 // indirect
 	go.opentelemetry.io/otel/trace v1.21.0 // indirect
 	go.uber.org/multierr v1.11.0 // indirect
-	golang.org/x/net v0.18.0 // indirect
+	golang.org/x/net v0.19.0 // indirect
 	golang.org/x/sys v0.15.0 // indirect
 	golang.org/x/text v0.14.0 // indirect
 	google.golang.org/genproto/googleapis/rpc v0.0.0-20231012201019-e917dd12ba7a // indirect

config/confighttp/go.mod

@@ -18,6 +18,7 @@ require (
 	go.opentelemetry.io/collector/extension/auth v0.91.0
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.46.1
 	go.opentelemetry.io/otel v1.21.0
+	go.uber.org/goleak v1.3.0
 	go.uber.org/zap v1.26.0
 	golang.org/x/net v0.19.0
 )

config/confighttp/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package confighttp
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/confignet/go.mod

@@ -2,7 +2,10 @@ module go.opentelemetry.io/collector/config/confignet
 
 go 1.20
 
-require github.com/stretchr/testify v1.8.4
+require (
+	github.com/stretchr/testify v1.8.4
+	go.uber.org/goleak v1.3.0
+)
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect

config/confignet/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package confignet
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/configopaque/go.mod

@@ -4,6 +4,7 @@ go 1.20
 
 require (
 	github.com/stretchr/testify v1.8.4
+	go.uber.org/goleak v1.3.0
 	gopkg.in/yaml.v3 v3.0.1
 )
 

config/configopaque/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package configopaque
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/configretry/go.mod

@@ -5,6 +5,7 @@ go 1.20
 require (
 	github.com/cenkalti/backoff/v4 v4.2.1
 	github.com/stretchr/testify v1.8.4
+	go.uber.org/goleak v1.3.0
 )
 
 require (

config/configretry/package_test.go

@@ -0,0 +1,14 @@
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+package configretry
+
+import (
+	"testing"
+
+	"go.uber.org/goleak"
+)
+
+func TestMain(m *testing.M) {
+	goleak.VerifyTestMain(m)
+}

config/configtelemetry/go.mod

@@ -2,7 +2,10 @@ module go.opentelemetry.io/collector/config/configtelemetry
 
 go 1.20
 
-require github.com/stretchr/testify v1.8.4
+require (
+	github.com/stretchr/testify v1.8.4
+	go.uber.org/goleak v1.3.0
+)
 
 require (
 	github.com/davecgh/go-spew v1.1.1 // indirect