test: update echo2 test

WORKSPACE

@@ -9,4 +9,5 @@ load("@envoy//bazel:repositories.bzl", "envoy_dependencies")
 load("@envoy//bazel:cc_configure.bzl", "cc_configure")
 
 envoy_dependencies()
+
 cc_configure()

echo2_integration_test.cc

@@ -9,7 +9,7 @@ class Echo2IntegrationTest : public BaseIntegrationTest,
    * Initializer for an individual integration test.
    */
   void SetUp() override {
-    createTestServer("echo2_server.json", GetParam(), {"echo"});
+    createTestServer("echo2_server.json", {"echo"}, GetParam());
   }
 
   /**
@@ -26,12 +26,12 @@ INSTANTIATE_TEST_CASE_P(IpVersions, Echo2IntegrationTest,
 TEST_P(Echo2IntegrationTest, Echo) {
   Buffer::OwnedImpl buffer("hello");
   std::string response;
-  RawConnectionDriver connection(lookupPort("echo"), GetParam(), buffer,
+  RawConnectionDriver connection(lookupPort("echo"), buffer,
                                  [&](Network::ClientConnection&, const Buffer::Instance& data)
                                      -> void {
                                        response.append(TestUtility::bufferToString(data));
                                        connection.close();
-                                     });
+                                     }, GetParam());
 
   connection.run();
   EXPECT_EQ("hello", response);

echo2_server.json

@@ -15,7 +15,9 @@
     ]
   }],
 
-  "admin": { "access_log_path": "/dev/null", "profile_path": "{{ test_tmpdir }}/envoy.prof", "address": "tcp://127.0.0.1:0" },
+  "admin": { "access_log_path": "/dev/null",
+	     "profile_path": "{{ test_tmpdir }}/envoy.prof",
+	     "address": "tcp://{{ ip_loopback_address }}:0" },
 
   "cluster_manager": {
       "clusters": []