[#455] Fix non-informative message when parse node attributes

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

pkg/util/attributes/parser.go

@@ -1,7 +1,6 @@
 package attributes
 
 import (
-	"errors"
 	"fmt"
 	"strings"
 
@@ -21,7 +20,7 @@ func ReadNodeAttributes(dst *netmap.NodeInfo, attrs []string) error {
 
 		k, v, found := strings.Cut(line, keyValueSeparator)
 		if !found {
-			return errors.New("missing attribute key and/or value")
+			return fmt.Errorf("wrong format for node attribute: '%s'", attrs[i])
 		}
 
 		_, ok := cache[k]
@@ -36,9 +35,9 @@ func ReadNodeAttributes(dst *netmap.NodeInfo, attrs []string) error {
 		v = replaceEscaping(v, true)
 
 		if k == "" {
-			return errors.New("empty key")
+			return fmt.Errorf("empty key in node attribute: '%s'", attrs[i])
 		} else if v == "" {
-			return errors.New("empty value")
+			return fmt.Errorf("empty value in node attribute: '%s'", attrs[i])
 		}
 
 		dst.SetAttribute(k, v)