Fix default value for long-running spans with DJM (#7795)

Change the default config values for DJM before the first call to Config.get() that resolve the Config values.

Long running spans not being enabled when using -Ddd.data.jobs.enabled=true since the config values were already resolved before the default values are changed

Author: paul-laffon-dd

dd-java-agent/agent-bootstrap/src/main/java/datadog/trace/bootstrap/Agent.java

@@ -221,6 +221,15 @@ public static void start(
 
     boolean dataJobsEnabled = isFeatureEnabled(AgentFeature.DATA_JOBS);
     if (dataJobsEnabled) {
+      log.info("Data Jobs Monitoring enabled, enabling spark integrations");
+
+      setSystemPropertyDefault(
+          propertyNameToSystemPropertyName(TracerConfig.TRACE_LONG_RUNNING_ENABLED), "true");
+      setSystemPropertyDefault(
+          propertyNameToSystemPropertyName("integration.spark.enabled"), "true");
+      setSystemPropertyDefault(
+          propertyNameToSystemPropertyName("integration.spark-executor.enabled"), "true");
+
       String javaCommand = System.getProperty("sun.java.command");
       String dataJobsCommandPattern = Config.get().getDataJobsCommandPattern();
       if (!isDataJobsSupported(javaCommand, dataJobsCommandPattern)) {
@@ -230,15 +239,6 @@ public static void start(
             dataJobsCommandPattern);
         return;
       }
-
-      log.info("Data Jobs Monitoring enabled, enabling spark integrations");
-
-      setSystemPropertyDefault(
-          propertyNameToSystemPropertyName(TracerConfig.TRACE_LONG_RUNNING_ENABLED), "true");
-      setSystemPropertyDefault(
-          propertyNameToSystemPropertyName("integration.spark.enabled"), "true");
-      setSystemPropertyDefault(
-          propertyNameToSystemPropertyName("integration.spark-executor.enabled"), "true");
     }
 
     if (!isSupportedAppSecArch()) {