remove checkBucketExist check entirely to avoid fan-out calls (#18917)

Each Put, List, Multipart operations heavily rely on making
GetBucketInfo() call to verify if bucket exists or not on
a regular basis. This has a large performance cost when there
are tons of servers involved.

We did optimize this part by vectorizing the bucket calls,
however its not enough, beyond 100 nodes and this becomes
fairly visible in terms of performance.

cmd/storage-rest-common.go

@@ -20,7 +20,9 @@ package cmd
 //go:generate msgp -file $GOFILE -unexported
 
 const (
-	storageRESTVersion       = "v55" // ReadAll, RenameFile migrate to websockets
+	// Added orig-volume support for CreateFile, WriteMetadata, ReadVersion, ListDir
+	// this is needed for performance optimization on bucket checks.
+	storageRESTVersion       = "v56"
 	storageRESTVersionPrefix = SlashSeparator + storageRESTVersion
 	storageRESTPrefix        = minioReservedBucketPath + "/storage"
 )
@@ -43,7 +45,6 @@ const (
 	storageRESTMethodStatInfoFile   = "/statfile"
 	storageRESTMethodReadMultiple   = "/readmultiple"
 	storageRESTMethodCleanAbandoned = "/cleanabandoned"
-	storageRESTMethodLinkXL         = "/linkxl"
 )
 
 const (
@@ -69,6 +70,7 @@ const (
 	storageRESTGlob          = "glob"
 	storageRESTMetrics       = "metrics"
 	storageRESTDriveQuorum   = "drive-quorum"
+	storageRESTOrigVolume    = "orig-volume"
 )
 
 type nsScannerOptions struct {