Add support for mqtt5

[catcherwong]

This PR did the following things:

1. Introduce Paho MQTT client both v3 and v5, and set the default client to it.
2. Add UserProperty, CleanStart and SessionExpiryInterval in Conn Pannel.
3. Add WS Header in Protocol Panel
4. Add UserProperties, MessageExpiryInterval, TopicAlias, PayloadFormat,ContentType ,ResponseTopic,CorrelationData and SubscriptionIdentifier in Publish Option Pannel
5. Replace p12 cert with CA Cert, Client Cert and Client Private Key when using dual ssl.

[Host32]

up!

[Host32]

The build of this branch for anyone who needs it while the PR is not merged:

mqttvt-xmeter-jar-with-dependencies.zip

[andrei-shyliayeu]

MessageExpiryInterval could be undefined, so this parameter on GUI should accept and allow to save undefined value. Some brokers (e.g. ActiveMQ Artemis) interpret a value "0" as Expired Immediately.

[wu159753]

I use dual ssl, but jmter run error. My key is EC encrypted type.
net.xmeter.samplers.ConnectSampler sample
SEVERE: Failed to establish Connection null
java.lang.ClassCastException: class org.bouncycastle.asn1.pkcs.PrivateKeyInfo cannot be cast to class org.bouncycastle.openssl.PEMKeyPair (org.bouncycastle.asn1.pkcs.PrivateKeyInfo and org.bouncycastle.openssl.PEMKeyPair are in unnamed module of loader org.apache.jmeter.DynamicClassLoader @4517d9a3)
at net.xmeter.samplers.mqtt.paho.PahoUtil.getSocketFactory(PahoUtil.java:115)
at net.xmeter.samplers.mqtt.paho.PahoMQTT5Client.connect(PahoMQTT5Client.java:69)
at net.xmeter.samplers.ConnectSampler.sample(ConnectSampler.java:96)
at org.apache.jmeter.threads.JMeterThread.doSampling(JMeterThread.java:651)
at org.apache.jmeter.threads.JMeterThread.executeSamplePackage(JMeterThread.java:570)
at org.apache.jmeter.threads.JMeterThread.processSampler(JMeterThread.java:501)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:268)
at java.base/java.lang.Thread.run(Thread.java:833)

[marcelomrwin]

I tried using your plugin but consumers don't receive any messages, unfortunately.