Add esp_http_client

Add error handling for http client

set ssid password correct with Example_WIFI test, and clear password before free

Fixed the CI failure due to HTTP errror names

components/esp_http_client/lib/include/transport_tcp.h

@@ -0,0 +1,36 @@
+// Copyright 2015-2018 Espressif Systems (Shanghai) PTE LTD
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef _TRANSPORT_TCP_H_
+#define _TRANSPORT_TCP_H_
+
+#include "transport.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief      Create TCP transport, the transport handle must be release transport_destroy callback
+ *
+ * @return  the allocated transport_handle_t, or NULL if the handle can not be allocated
+ */
+transport_handle_t transport_tcp_init();
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif