[#585] fstree: Add optional file counter

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/local_object_storage/writecache/writecachebbolt/cachebbolt.go

@@ -107,14 +107,13 @@ func (c *cache) Open(readOnly bool) error {
 	// thus we need to create a channel here.
 	c.closeCh = make(chan struct{})
 
-	return metaerr.Wrap(c.setCounters())
+	return metaerr.Wrap(c.initCounters())
 }
 
 // Init runs necessary services.
 func (c *cache) Init() error {
 	c.metrics.SetMode(c.mode)
 	c.runFlushLoop()
-	c.runDBCounterLoop()
 	return nil
 }