Description of problem:
[rfe] improve tempest cleanup feature so that live openstack environments won't lose created data after the saved init state . For instane, in a public cloud , if an operator runs tempest --init-saved-state while the cloud is live , it generates a snapshot of the current environment resources, but this cloud being live, new resources might be created after that command and before tempest cleanup is actually ran resulting in the loss of newly created user resources.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.
2.
3.

Actual results:

Expected results:

Additional info: