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/filer/reader_cache.go

@@ -2,7 +2,6 @@ package filer
 
 import (
 	"fmt"
-	"github.com/seaweedfs/seaweedfs/weed/util"
 	"sync"
 	"sync/atomic"
 	"time"
@@ -10,6 +9,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/util/chunk_cache"
 	"github.com/seaweedfs/seaweedfs/weed/util/mem"
 	"github.com/seaweedfs/seaweedfs/weed/wdclient"
+	util_http "github.com/seaweedfs/seaweedfs/weed/util/http"
 )
 
 type ReaderCache struct {
@@ -171,7 +171,7 @@ func (s *SingleChunkCacher) startCaching() {
 
 	s.data = mem.Allocate(s.chunkSize)
 
-	_, s.err = util.RetriedFetchChunkData(s.data, urlStrings, s.cipherKey, s.isGzipped, true, 0)
+	_, s.err = util_http.RetriedFetchChunkData(s.data, urlStrings, s.cipherKey, s.isGzipped, true, 0)
 	if s.err != nil {
 		mem.Free(s.data)
 		s.data = nil