Temporary switch lb/ovs/ovn scenario jobs to cirros-0.5.3

With cirros-0.6+ we hitting random issues as mentioned
in the related bug, until the cirros fix[1] merge and have
new cirros release let's switch to older cirros image.

[1] https://github.com/cirros-dev/cirros/pull/116
Related-Bug: #2045549

Depends-On: https://review.opendev.org/c/openstack/neutron/+/924213
Change-Id: I9f3a72da13212f735d51c7929b05706ba063f313
1 file changed