HTTPRoute parentRef status leftovers after update

[mlavacca]

Is there an existing issue for this?

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Problem Statement

When an *Route references a parent through the ParentRef section, a new ParentStatus gets created in the route status, with the whole set of conditions. After an update on the Route's ParentReferences (change the parent from gatewayA to gatewayB), the ParentStatus for GatewayB gets appended to the already existing ParentStatuses instead of replacing them.

Acceptance Criteria

• the ParentStatus content has a 1:1 relationship to the ParentRef in the route spec.