Added tls for http clients (#5766)

* Added global http client

* Added Do func for global http client

* Changed the code to use the global http client

* Fix http client in volume uploader

* Fixed pkg name

* Fixed http util funcs

* Fixed http client for bench_filer_upload

* Fixed http client for stress_filer_upload

* Fixed http client for filer_server_handlers_proxy

* Fixed http client for command_fs_merge_volumes

* Fixed http client for command_fs_merge_volumes and command_volume_fsck

* Fixed http client for s3api_server

* Added init global client for main funcs

* Rename global_client to client

* Changed:
- fixed NewHttpClient;
- added CheckIsHttpsClientEnabled func
- updated security.toml in scaffold

* Reduce the visibility of some functions in the util/http/client pkg

* Added the loadSecurityConfig function

* Use util.LoadSecurityConfiguration() in NewHttpClient func

weed/server/filer_server_handlers_write_upload.go

@@ -158,7 +158,13 @@ func (fs *FilerServer) doUpload(urlLocation string, limitedReader io.Reader, fil
 		PairMap:           pairMap,
 		Jwt:               auth,
 	}
-	uploadResult, err, data := operation.Upload(limitedReader, uploadOption)
+
+	uploader, err := operation.NewUploader()
+	if err != nil {
+		return nil, err, []byte{}
+	}
+
+	uploadResult, err, data := uploader.Upload(limitedReader, uploadOption)
 	if uploadResult != nil && uploadResult.RetryCount > 0 {
 		stats.FilerHandlerCounter.WithLabelValues(stats.ChunkUploadRetry).Add(float64(uploadResult.RetryCount))
 	}