add warning log when cx not providing the java annotation files

package-pipeline.ps1

@@ -23,7 +23,7 @@ Get-ChildItem -Path .\target\* -Include 'azure*' -Exclude '*shaded.jar','*tests.
 StopOnFailedExecution
 copy-item ./worker.config.json pkg
 copy-item ./tools/AzureFunctionsJavaWorker.nuspec pkg/
-Copy-Item ".\annotationLib" pkg\annotationLib -Recurse
+copy-item ./annotationLib pkg/annotationLib -Recurse
 set-location pkg
 nuget pack -Properties version=$buildNumber
 set-location ..

src/main/java/com/microsoft/azure/functions/worker/broker/JavaFunctionBroker.java

@@ -10,6 +10,7 @@ import java.util.concurrent.ConcurrentHashMap;
 
 import com.microsoft.azure.functions.rpc.messages.*;
 import com.microsoft.azure.functions.worker.Constants;
+import com.microsoft.azure.functions.worker.WorkerLogManager;
 import com.microsoft.azure.functions.worker.binding.BindingDataStore;
 import com.microsoft.azure.functions.worker.binding.ExecutionRetryContext;
 import com.microsoft.azure.functions.worker.binding.ExecutionTraceContext;
@@ -135,6 +136,7 @@ public class JavaFunctionBroker {
 	}
 
 	public void addJavaAnnotationLibrary() throws IOException {
+		WorkerLogManager.getSystemLogger().warning("Customer is not providing java annotation files, they may not use the latest version of java library and maven plugin.");
 		String javaLibPath = System.getenv(Constants.FUNCTIONS_WORKER_DIRECTORY) + Constants.JAVA_LIBRARY_DIRECTORY;
 		File javaLib = new File(javaLibPath);
 		File[] files = javaLib.listFiles(file -> file.getName().contains(Constants.JAVA_LIBRARY_ARTIFACT_ID));