Spring 5 reff (#1786)

* Fix Spring5 snippets

* Refactor Spring 5 samples

* Refactor Spring 5 samples

* Enable Spring5

spring-5/src/test/java/com/baeldung/Example2IntegrationTest.java

@@ -0,0 +1,29 @@
+package com.baeldung;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class Example2IntegrationTest {
+
+    @Test
+    public void test1a() {
+        block(3000);
+    }
+
+    @Test
+    public void test1b() {
+        block(3000);
+    }
+
+    public static void block(long ms) {
+        try {
+            Thread.sleep(ms);
+        } catch (InterruptedException e) {
+            System.out.println("Thread Interrupted");
+        }
+    }
+}