agent: blocking central config RPCs iterations should not interfere with each other #6316
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The response variable from the ResolveServiceConfig RPC is mutated while various state store operations are performed.
This means that when a blocking query necessitates re-executing the body of the query (due to something like deleting
proxy-defaults/global) some information from the previous speculative query bleeds over by way of the shared response variable.The easy fix here is to reset the state of the response variable at the stop of the query.