Add AWS Native Lamnbda sample

spring-cloud-function-samples/function-sample-aws-native/src/main/java/com/example/demo/NativeUppercaseApplication.java

@@ -0,0 +1,24 @@
+package com.example.demo;
+
+import java.util.function.Function;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class NativeUppercaseApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(NativeUppercaseApplication.class, args);
+	}
+	
+	@Bean
+	public Function<String, String> uppercase() {
+		return v -> {
+			System.out.println("Uppercasing " + v);
+			return v.toUpperCase();
+		};
+	}
+
+}

spring-cloud-function-samples/function-sample-aws-native/src/main/resources/application.properties

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+