Add the u20->u22 openstack workflow #32

Job	Run time
testsuite / testsuite	2m 57s
terraform_openstack_create	1m 55s
clone_elevate_repo	6s
setup_integration_checks	6s
prep_elevate	55s
start_elevate	14m 37s
wait_for_stage_1_reboot	29s
watch_for_stage_2_reboot	6s
wait_for_stage_2_reboot	5s
watch_for_stage_3_reboot	5m 47s
wait_for_stage_3_reboot	46s
watch_for_stage_4_reboot	16m 51s
wait_for_stage_4_reboot	15m 12s
watch_for_stage_5_reboot	16m 9s
wait_for_stage_5_reboot	33s
watch_for_final_reboot	1m 5s
wait_for_final_reboot	32s
verify_upgraded_os	17s
terraform_openstack_destroy	46s
	1h 19m 14s

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