* Adding new backends
As we cannot update the spread.yaml with the new backends, because
spread from master does not supported them. I added the new file with
the definitions which can be merged when it needs to be used.
A merging tool is comming next
* Add env details to openstack spread.yaml
* update disk for openstack
* update testflinger yaml config files
* openstack systems updated
* new script to add backend to spread.yaml
* add backend also to get failed tests
* add more workers to run fedora-40 tests
