Fix status for parentRef with invalid listener in HTTPRoute #350
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Problem: If an HTTPRoute references an invalid listener in a parentRef, the status is incorrectly reported as
Accepted:True
Fix: Check if the listener associated with the parentRef is valid when binding HTTPRoutes to listeners. If not valid, mark the section name as invalid with a condition of
Accepted:False
and a Reason ofInvalidListener
Note: The spec does not define a Reason that covers this case where the listener is invalid. This PR adds a new route Reason
InvalidListener
for this case. There's an open discussion about adding this Reason to the spec: kubernetes-sigs/gateway-api#1445