Simplify testing with TLS (#4095)

plugins/inputs/amqp_consumer/README.md

@@ -32,11 +32,11 @@ The following defaults are known to work with RabbitMQ:
   ## Using EXTERNAL requires enabling the rabbitmq_auth_mechanism_ssl plugin as
   ## described here: https://www.rabbitmq.com/plugins.html
   # auth_method = "PLAIN"
-  ## Optional SSL Config
-  # ssl_ca = "/etc/telegraf/ca.pem"
-  # ssl_cert = "/etc/telegraf/cert.pem"
-  # ssl_key = "/etc/telegraf/key.pem"
-  ## Use SSL but skip chain & host verification
+  ## Optional TLS Config
+  # tls_ca = "/etc/telegraf/ca.pem"
+  # tls_cert = "/etc/telegraf/cert.pem"
+  # tls_key = "/etc/telegraf/key.pem"
+  ## Use TLS but skip chain & host verification
   # insecure_skip_verify = false
 
   ## Data format to consume.

plugins/inputs/amqp_consumer/amqp_consumer.go

@@ -10,7 +10,7 @@ import (
 	"github.com/streadway/amqp"
 
 	"github.com/influxdata/telegraf"
-	"github.com/influxdata/telegraf/internal"
+	"github.com/influxdata/telegraf/internal/tls"
 	"github.com/influxdata/telegraf/plugins/inputs"
 	"github.com/influxdata/telegraf/plugins/parsers"
 )
@@ -31,14 +31,7 @@ type AMQPConsumer struct {
 
 	// AMQP Auth method
 	AuthMethod string
-	// Path to CA file
-	SSLCA string `toml:"ssl_ca"`
-	// Path to host cert file
-	SSLCert string `toml:"ssl_cert"`
-	// Path to cert key file
-	SSLKey string `toml:"ssl_key"`
-	// Use SSL but skip chain & host verification
-	InsecureSkipVerify bool
+	tls.ClientConfig
 
 	parser parsers.Parser
 	conn   *amqp.Connection
@@ -78,11 +71,11 @@ func (a *AMQPConsumer) SampleConfig() string {
   ## described here: https://www.rabbitmq.com/plugins.html
   # auth_method = "PLAIN"
 
-  ## Optional SSL Config
-  # ssl_ca = "/etc/telegraf/ca.pem"
-  # ssl_cert = "/etc/telegraf/cert.pem"
-  # ssl_key = "/etc/telegraf/key.pem"
-  ## Use SSL but skip chain & host verification
+  ## Optional TLS Config
+  # tls_ca = "/etc/telegraf/ca.pem"
+  # tls_cert = "/etc/telegraf/cert.pem"
+  # tls_key = "/etc/telegraf/key.pem"
+  ## Use TLS but skip chain & host verification
   # insecure_skip_verify = false
 
   ## Data format to consume.
@@ -108,8 +101,7 @@ func (a *AMQPConsumer) Gather(_ telegraf.Accumulator) error {
 
 func (a *AMQPConsumer) createConfig() (*amqp.Config, error) {
 	// make new tls config
-	tls, err := internal.GetTLSConfig(
-		a.SSLCert, a.SSLKey, a.SSLCA, a.InsecureSkipVerify)
+	tls, err := a.ClientConfig.TLSConfig()
 	if err != nil {
 		return nil, err
 	}