Kuryr is adding sg rules to the loadbalancer to ensure namespace
isolation. Octavia is also adding sg rules when creating listeners.
Octavia is checking if a rule in the same protocol, direction and
port is already created before adding its own. However, if by any
chance kuryr is delayed adding its own rules (as it is already
happening in some gates), octavia will add its own first, and then
kuryr-controller will do it two. Thus having extra rules that will
break the isolation enforcement.
Closes-Bug: 1810395
Change-Id: If4760625728539adb336e44ce881e04454c09d40
60a1e19d49