[chore] [exporter/sumologic] Use NewDefaultClientConfig instead of ma…

…nually creating struct

**Description:**
This PR makes usage of `NewDefaultClientConfig` instead of manually creating the confighttp.ClientConfig struct.

**Link to tracking Issue:** open-telemetry#35457

exporter/sumologicexporter/config.go

@@ -63,13 +63,13 @@ type Config struct {
 
 // createDefaultClientConfig returns default http client settings
 func createDefaultClientConfig() confighttp.ClientConfig {
-	return confighttp.ClientConfig{
-		Timeout:     defaultTimeout,
-		Compression: DefaultCompressEncoding,
-		Auth: &configauth.Authentication{
-			AuthenticatorID: component.NewID(sumologicextension.NewFactory().Type()),
-		},
+	clientConfig := confighttp.NewDefaultClientConfig()
+	clientConfig.Timeout = defaultTimeout
+	clientConfig.Compression = DefaultCompressEncoding
+	clientConfig.Auth = &configauth.Authentication{
+		AuthenticatorID: component.NewID(sumologicextension.NewFactory().Type()),
 	}
+	return clientConfig
 }
 
 func (cfg *Config) Validate() error {

exporter/sumologicexporter/factory_test.go

@@ -4,13 +4,15 @@
 package sumologicexporter
 
 import (
+	"net/http"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/config/configauth"
 	"go.opentelemetry.io/collector/config/confighttp"
+	"go.opentelemetry.io/collector/config/configopaque"
 	"go.opentelemetry.io/collector/config/configretry"
 	"go.opentelemetry.io/collector/exporter/exporterhelper"
 
@@ -28,6 +30,10 @@ func TestCreateDefaultConfig(t *testing.T) {
 	cfg := factory.CreateDefaultConfig()
 	qs := exporterhelper.NewDefaultQueueConfig()
 	qs.Enabled = false
+	defaultMaxIdleConns := http.DefaultTransport.(*http.Transport).MaxIdleConns
+	defaultMaxIdleConnsPerHost := http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost
+	defaultMaxConnsPerHost := http.DefaultTransport.(*http.Transport).MaxConnsPerHost
+	defaultIdleConnTimeout := http.DefaultTransport.(*http.Transport).IdleConnTimeout
 
 	assert.Equal(t, &Config{
 		MaxRequestBodySize: 1_048_576,
@@ -41,6 +47,11 @@ func TestCreateDefaultConfig(t *testing.T) {
 			Auth: &configauth.Authentication{
 				AuthenticatorID: component.NewID(metadata.Type),
 			},
+			Headers:             map[string]configopaque.String{},
+			MaxIdleConns:        &defaultMaxIdleConns,
+			MaxIdleConnsPerHost: &defaultMaxIdleConnsPerHost,
+			MaxConnsPerHost:     &defaultMaxConnsPerHost,
+			IdleConnTimeout:     &defaultIdleConnTimeout,
 		},
 		BackOffConfig: configretry.NewDefaultBackOffConfig(),
 		QueueSettings: qs,