Walk the list of registered EndpointResolvers, so as to force a fresh resolution of the given abstract EPR, discarding any previously cached reference.
This API may be used by say the transport-level Conduit when it detects a non-transient error on the outgoing connection, or by any other actor in the dispatch with the ability to infer server-side unavailability.
@param logical the previously resolved abstract EPR
@param physical the concrete EPR to refresh
@return the renewed concrete EPR if appropriate, null otherwise