add instance and fqn into log message properties (#11399)

### Motivation

Enrich the published log message with `instanceId` and `fqn` set in properties.

### Modifications

add `instanceId` and `fqn` into log message properties

(cherry picked from commit b6d02e4)

pulsar-functions/instance/src/main/java/org/apache/pulsar/functions/instance/JavaInstanceRunnable.java

@@ -574,7 +574,8 @@ private void setupLogHandler() {
             // to prevent "SSE4.2 CRC32C provider initialized" appearing in log topic
             new Crc32cIntChecksum();
             logAppender = new LogAppender(client, instanceConfig.getFunctionDetails().getLogTopic(),
-                    FunctionCommon.getFullyQualifiedName(instanceConfig.getFunctionDetails()));
+                    FunctionCommon.getFullyQualifiedName(instanceConfig.getFunctionDetails()),
+                    instanceConfig.getInstanceName());
             logAppender.start();
             setupLogTopicAppender(LoggerContext.getContext());
         }

pulsar-functions/instance/src/main/java/org/apache/pulsar/functions/instance/LogAppender.java

@@ -35,21 +35,25 @@ public class LogAppender implements Appender {
     private PulsarClient pulsarClient;
     private String logTopic;
     private String fqn;
+    private String instance;
     private State state;
     private ErrorHandler errorHandler;
     private Producer<byte[]> producer;
 
-    public LogAppender(PulsarClient pulsarClient, String logTopic, String fqn) {
+    public LogAppender(PulsarClient pulsarClient, String logTopic, String fqn, String instance) {
         this.pulsarClient = pulsarClient;
         this.logTopic = logTopic;
         this.fqn = fqn;
+        this.instance = instance;
     }
 
     @Override
     public void append(LogEvent logEvent) {
         producer.newMessage()
                 .value(logEvent.getMessage().getFormattedMessage().getBytes(StandardCharsets.UTF_8))
                 .property("loglevel", logEvent.getLevel().name())
+                .property("instance", instance)
+                .property("fqn", fqn)
                 .sendAsync();
     }