When we try to save() object after its refresh(), it leads to a
TypeError. Let's not keep track of changed fields in refresh(),
all fields are reloaded from database.
Closes-Bug: #1612666
Co-Authored-By: Vladyslav Drok <vdrok@mirantis.com>
Change-Id: I0f47552c424973af3704903a52f98db819b18c3f