Use cirros 0.4.0 for ironic deployments

It was found that Ironic BFV tests failed when cirros 0.3.5
was used for volume creation. Adding support for
cirros 0.4.0

Change-Id: I62f71a04290319bf9167a0de152bc2ab4f2b514e
Related-PROD: PROD-26979
Related-PROD: PROD-30706
(cherry picked from commit 8339441eb9280f25d3badde93f6c61ae588346d3)
1 file changed