adding to bootstrap classpath for testing

Author: mhlidd

dd-java-agent/instrumentation-testing/src/main/java/datadog/trace/agent/test/BootstrapClasspathSetupListener.java

@@ -74,6 +74,7 @@ public void launcherSessionOpened(LauncherSession session) {
     "datadog.trace.instrumentation.api",
     "datadog.trace.logging",
     "datadog.trace.util",
+    "datadog.trace.config.inversion", // Add this line
   };
 
   public static final ClassPath TEST_CLASSPATH = computeTestClasspath();