fix: remove squash on configtls.TLSClientSetting for splunkhecexporter (#5541)

This PR removes squash on`configtls.TLSClientSetting` and update corresponding yaml file for splunkhecexporter.
See history [here](#5454)

**Link to tracking Issue:**
#5433

Author: Hyunuk Lim

CHANGELOG.md

@@ -4,6 +4,7 @@
 
 ## 🛑 Breaking changes 🛑
 
+- Remove squash on configtls.TLSClientSetting for splunkhecexporter (#5541)
 - Remove squash on configtls.TLSClientSetting for elastic components (#5539)
 - Remove squash on configtls.TLSClientSetting for observiqexporter (#5540)
 - Remove squash on configtls.TLSClientSetting for AWS components (#5454)

exporter/splunkhecexporter/README.md

@@ -61,14 +61,15 @@ exporters:
     disable_compression: false
     # HTTP timeout when sending data. Defaults to 10s.
     timeout: 10s
-    # Whether to skip checking the certificate of the HEC endpoint when sending data over HTTPS. Defaults to false.
-    insecure_skip_verify: false
-    # Path to the CA cert to verify the server being connected to.
-    ca_file: /certs/ExampleCA.crt
-    # Path to the TLS cert to use for client connections when TLS client auth is required.
-    cert_file: /certs/HECclient.crt
-    # Path to the TLS key to use for TLS required connections.
-    key_file: /certs/HECclient.key
+    tls:
+      # Whether to skip checking the certificate of the HEC endpoint when sending data over HTTPS. Defaults to false.
+      insecure_skip_verify: false
+      # Path to the CA cert to verify the server being connected to.
+      ca_file: /certs/ExampleCA.crt
+      # Path to the TLS cert to use for client connections when TLS client auth is required.
+      cert_file: /certs/HECclient.crt
+      # Path to the TLS key to use for TLS required connections.
+      key_file: /certs/HECclient.key
     # Application name is used to track telemetry information for Splunk App's using HEC by App name.
     splunk_app_name: "OpenTelemetry-Collector Splunk Exporter"
     # Application version is used to track telemetry information for Splunk App's using HEC by App version.

exporter/splunkhecexporter/config.go

@@ -76,7 +76,7 @@ type Config struct {
 	MaxContentLengthLogs uint `mapstructure:"max_content_length_logs"`
 
 	// TLSSetting struct exposes TLS client configuration.
-	TLSSetting configtls.TLSClientSetting `mapstructure:",squash"`
+	TLSSetting configtls.TLSClientSetting `mapstructure:"tls,omitempty"`
 
 	// App name is used to track telemetry information for Splunk App's using HEC by App name. Defaults to "OpenTelemetry Collector Contrib".
 	SplunkAppName string `mapstructure:"splunk_app_name"`

exporter/splunkhecexporter/testdata/config.yaml

@@ -14,10 +14,11 @@ exporters:
     source: "otel"
     sourcetype: "otel"
     index: "metrics"
-    insecure_skip_verify: false
-    ca_file: ""
-    cert_file: ""
-    key_file: ""
+    tls:
+      insecure_skip_verify: false
+      ca_file: ""
+      cert_file: ""
+      key_file: ""
     timeout: 10s
     sending_queue:
       enabled: true