Add script to run devstack
Add script to run devstack

The script does a devstack setup and executes tempest afterwards.

gosipyan/automation,aspiers/automation,aspiers/automation,vmoravec/automation,vmoravec/automation,gosipyan/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,vmoravec/automation,SUSE-Cloud/automation,aspiers/automation,aspiers/automation,vmoravec/automation,gosipyan/automation,gosipyan/automation