[#218] blobstor: Add blobovnicza ID value to DeleteSmallPrm

Blobovnicza ID parameter provides the ability to specify particular
blobovnicza to delete object from. In this case only specified blobovnicza
is processed.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

pkg/local_object_storage/blobstor/delete_small.go

@@ -3,6 +3,7 @@ package blobstor
 // DeleteSmallPrm groups the parameters of DeleteSmall operation.
 type DeleteSmallPrm struct {
 	address
+	rwBlobovniczaID
 }
 
 // DeleteSmallRes groups resulting values of DeleteSmall operation.