node.save() doesn't update object from db because 'updated_at'
field for the node is not up-to-date after a save().
Change-Id: I58076d71e5977dded3f5485f295b3235d467872d
Partial-Bug: #1281638
Co-Authored-By: Galyna Zholtkevych <gzholtkevych@mirantis.com>