fix(Kubernetes client): Log and ignore end of stream exceptions from the Kubernetes API

This is a workaround for a bug in the Kubernetes client.
kubernetes-client/csharp#893.
It will log and then ignore error messages 
like `System.Net.Http.HttpRequestException: Error while copying content to a stream.`

Author: Eddie

src/KubeOps/Operator/Kubernetes/ResourceWatcher{TEntity}.cs

@@ -136,9 +136,11 @@ private void OnWatcherEvent(WatchEventType type, TEntity resource)
             case WatchEventType.Deleted:
                 _watchEvents.OnNext(new WatchEvent(type, resource));
                 break;
+
             case WatchEventType.Error:
             case WatchEventType.Bookmark:
                 break;
+
             default:
                 throw new ArgumentOutOfRangeException(nameof(type), type, "Event did not match.");
         }
@@ -164,6 +166,15 @@ e.InnerException is JsonException &&
                     @"The watcher received an empty response for resource ""{resource}"".",
                     typeof(TEntity));
                 return;
+
+            // this is a workaround for a bug in the kubernetes client. https://github.com/kubernetes-client/csharp/issues/893
+            case HttpRequestException hre when
+                e.InnerException is EndOfStreamException &&
+                e.InnerException.Message.Contains("Attempted to read past the end of the stream."):
+                _logger.LogDebug(
+                    @"The watcher received a known error from the watched resource ""{resource}"". This indicates that there are no instances of this resource.",
+                    typeof(TEntity));
+                return;
         }
 
         var backoff = DefaultBackoff;