Fix List() calls that didn't fill in revision #9599
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The watchercache requires the KVList to contain the revision for correctness. Without it, it can miss updates from the server. Fix the resources that were missing the revision and panic if the revision is missing to surface the problem in future.
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Replace Gets() with lists that filter on name.
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Looks like k8s might return that in some cases (customK8sResourceClient checks for it).
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CNI plugin relies on its List() being turned into a Get() for a single Pod. It doesn't have RBAC permissions for list and it only uses List() because one pod can result in >1 WEP.
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Big changes: refactored to use list with fieldSelector
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Description
The watchercache requires the KVList to contain the collection resource version for correctness. Without it, it can miss updates from the datastore.
List()calls intoGet()calls when only one resource was needed. This code was incorrect becauseGet()doesn't return the "collection resource version", which is what aList()call should return (and must return for a subsequentWatch()to function correctly).Get()use aList()with aFieldSelectorthat matches on the name of the resource. This returns the same resource but it wraps it in a List object that carries the needed collection version.WorkloadEndpointbehind an opt-inContextflag (with a nice long name to make users of the hacky flag feel bad :-P). The CNI plugin relies on that logic to avoid needinglistRBAC permissions for Pods.Related issues/PRs
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