[volume] refactor and add metrics for flight upload and download data limit condition (#6920)

* refactor concurrentDownloadLimit

* fix loop

* fix cmdServer

* fix: resolve conversation pr 6920

* Changes logging function (#6919)

* updated logging methods for stores

* updated logging methods for stores

* updated logging methods for filer

* updated logging methods for uploader and http_util

* updated logging methods for weed server

---------

Co-authored-by: akosov <a.kosov@kryptonite.ru>

* Improve lock ring (#6921)

* fix flaky lock ring test

* add more tests

* fix: build

* fix: rm import util/version

* fix: serverOptions

* refactoring

---------

Co-authored-by: Aleksey Kosov <rusyak777@list.ru>
Co-authored-by: akosov <a.kosov@kryptonite.ru>
Co-authored-by: Chris Lu <chrislusf@users.noreply.github.com>
Co-authored-by: chrislu <chris.lu@gmail.com>

weed/stats/metrics_names.go

@@ -4,8 +4,15 @@ package stats
 // The naming convention is ErrorSomeThing = "error.some.thing"
 const (
 	// volume server
-	WriteToLocalDisk            = "writeToLocalDisk"
-	WriteToReplicas             = "writeToReplicas"
+	WriteToLocalDisk   = "writeToLocalDisk"
+	WriteToReplicas    = "writeToReplicas"
+	DownloadLimitCond  = "downloadLimitCondition"
+	UploadLimitCond    = "uploadLimitCondition"
+	ReadProxyReq       = "readProxyRequest"
+	ReadRedirectReq    = "readRedirectRequest"
+	EmptyReadProxyLoc  = "emptyReadProxyLocaction"
+	FailedReadProxyReq = "failedReadProxyRequest"
+
 	ErrorSizeMismatchOffsetSize = "errorSizeMismatchOffsetSize"
 	ErrorSizeMismatch           = "errorSizeMismatch"
 	ErrorCRC                    = "errorCRC"