use GlobalContext whenever possible (#9280)

This change is throughout the codebase to
ensure that all codepaths honor GlobalContext

cmd/object-api-utils.go

@@ -18,7 +18,6 @@ package cmd
 
 import (
 	"bytes"
-	"context"
 	"encoding/hex"
 	"fmt"
 	"io"
@@ -219,7 +218,7 @@ func pathJoin(elem ...string) string {
 func mustGetUUID() string {
 	uuid, err := uuid.New()
 	if err != nil {
-		logger.CriticalIf(context.Background(), err)
+		logger.CriticalIf(GlobalContext, err)
 	}
 
 	return uuid.String()