Do not squash configtls.TLSClientSetting in confighttp and cnofiggrpc config

Author: mxiamxia

CHANGELOG.md

@@ -7,6 +7,7 @@
 - Remove AttributeMessageType (#4020)
 - Remove `mem-ballast-size-mib`, already deprecated and no-op (#4005).
 - Remove `AttributeHTTPStatusText` const, replaced with `"http.status_text"` (#4015, contrib/#5182).
+- Remove squash on `configtls.TLSClientSetting` in `confighttp` and `cnofiggrpc` config (#4063).
 
 ## v0.35.0 Beta
 

config/configgrpc/configgrpc.go

@@ -73,7 +73,7 @@ type GRPCClientSettings struct {
 	Compression string `mapstructure:"compression"`
 
 	// TLSSetting struct exposes TLS client configuration.
-	TLSSetting configtls.TLSClientSetting `mapstructure:",squash"`
+	TLSSetting configtls.TLSClientSetting `mapstructure:"tls,omitempty"`
 
 	// The keepalive parameters for gRPC client. See grpc.WithKeepaliveParams.
 	// (https://godoc.org/google.golang.org/grpc#WithKeepaliveParams).

config/confighttp/confighttp.go

@@ -38,7 +38,7 @@ type HTTPClientSettings struct {
 	Endpoint string `mapstructure:"endpoint"`
 
 	// TLSSetting struct exposes TLS client configuration.
-	TLSSetting configtls.TLSClientSetting `mapstructure:",squash"`
+	TLSSetting configtls.TLSClientSetting `mapstructure:"tls,omitempty"`
 
 	// ReadBufferSize for HTTP client. See http.Transport.ReadBufferSize.
 	ReadBufferSize int `mapstructure:"read_buffer_size"`

exporter/otlpexporter/testdata/config.yaml

@@ -12,7 +12,8 @@ exporters:
   otlp/2:
     endpoint: "1.2.3.4:1234"
     compression: "on"
-    ca_file: /var/lib/mycert.pem
+    tls:
+      ca_file: /var/lib/mycert.pem
     timeout: 10s
     sending_queue:
       enabled: true

exporter/otlphttpexporter/testdata/config.yaml

@@ -8,10 +8,11 @@ exporters:
   otlphttp:
   otlphttp/2:
     endpoint: "https://1.2.3.4:1234"
-    insecure: true
-    ca_file: /var/lib/mycert.pem
-    cert_file: certfile
-    key_file: keyfile
+    tls:
+      ca_file: /var/lib/mycert.pem
+      cert_file: certfile
+      key_file: keyfile
+      insecure: true
     timeout: 10s
     read_buffer_size: 123
     write_buffer_size: 345