Add the u20->u22 openstack workflow #23

Job	Run time
testsuite / testsuite	3m 0s
terraform_openstack_create	5m 59s
clone_elevate_repo	6s
setup_integration_checks	6s
start_elevate	5m 58s
wait_for_stage_1_reboot	1s
watch_for_stage_2_reboot	1s
wait_for_stage_2_reboot	1s
watch_for_stage_3_reboot	1s
wait_for_stage_3_reboot	1s
watch_for_stage_4_reboot	1s
wait_for_stage_4_reboot	1s
watch_for_stage_5_reboot	1s
wait_for_stage_5_reboot	1s
watch_for_final_reboot	1s
wait_for_final_reboot	1s
verify_upgraded_os	1s
terraform_openstack_destroy	1s
	15m 22s

Provide feedback