More than one SecurityGroup exists with the name 'lb-health-mgr-sec-grp'

FAILED! => {\"changed\": false, \"cmd\": \"set│·····················
 -o pipefail\\nSECGROUP=\\\"$(openstack security group rule list lb-health-mgr-sec-grp \\\\\\n --protocol udp \\\\\\n --ingress -f value 2>&1 | grep \\\"0.0.0.0/0 5555:5555\\\")\\\"\\nif [[│·····················
 -z \\\"${SECGROUP}\\\" ]]; then\\n openstack security group rule create --protocol udp --dst-port 5555 lb-health-mgr-sec-grp\\nfi\", \"delta\": \"0:00:03.558707\", \"end\": \"2021-05-26 12:27:58.883992\", \"msg\":│·····················
 \"non-zero return code\", \"rc\": 1, \"start\": \"2021-05-26 12:27:55.325285\", \"stderr\": \"More than one SecurityGroup exists with the name 'lb-health-mgr-sec-grp'.\", \"stderr_lines\": [\"More than one Security│·····················
Group exists with the name 'lb-health-mgr-sec-grp'.\"], \"stdout\": \"\", \"stdout_lines\": []}",

Best guess is that the 'openstack security group show' failed around[1] for some other reason than "ResourceNotFound", causing the another resource group to be created. And then the following task creating rules fail because of the ducplicate resource groups.

https://opendev.org/openstack/tripleo-ansible/src/commit/4ce6fda21b08bfcb8cfa319e7522fb9eb19c0178/tripleo_ansible/roles/octavia_overcloud_config/tasks/network.yml#L81-L82