examples: protocol examples which use common connection component

updated to use esp_netif_init instead of tcpip_adapter in initialization code

examples/protocols/esp_http_client/main/esp_http_client_example.c

@@ -15,7 +15,7 @@
 #include "esp_system.h"
 #include "nvs_flash.h"
 #include "esp_event.h"
-#include "tcpip_adapter.h"
+#include "esp_netif.h"
 #include "protocol_examples_common.h"
 #include "esp_tls.h"
 
@@ -541,7 +541,7 @@ void app_main(void)
       ret = nvs_flash_init();
     }
     ESP_ERROR_CHECK(ret);
-    tcpip_adapter_init();
+    esp_netif_init();
     ESP_ERROR_CHECK(esp_event_loop_create_default());
 
     /* This helper function configures Wi-Fi or Ethernet, as selected in menuconfig.