add http admin server

src/test/java/com/alibaba/druid/bvt/http/HttpServerTest.java

@@ -0,0 +1,13 @@
+package com.alibaba.druid.bvt.http;
+
+import com.alibaba.druid.http.HttpServer;
+
+import junit.framework.TestCase;
+
+public class HttpServerTest extends TestCase {
+    public void test_httpServer() throws Exception {
+        HttpServer server = new HttpServer();
+        server.start();
+        server.stop();
+    }
+}

src/test/java/com/alibaba/druid/http/HttpServerTest2.java

@@ -0,0 +1,12 @@
+package com.alibaba.druid.http;
+
+import junit.framework.TestCase;
+
+public class HttpServerTest2 extends TestCase {
+
+    public void test_httpServer() throws Exception {
+        HttpServer server = new HttpServer();
+        server.start();
+        server.join();
+    }
+}