Use structured logging for exceptions

src/BuildingBlocks/EventBus/EventBusRabbitMQ/DefaultRabbitMQPersisterConnection.cs

@@ -72,7 +72,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
                     .Or<BrokerUnreachableException>()
                     .WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
                     {
-                        _logger.LogWarning(ex.ToString());
+                        _logger.LogWarning(ex, "RabbitMQ Client could not connect after {TimeOut}s ({ExceptionMessage})", $"{time.TotalSeconds:n1}", ex.Message);
                     }
                 );
 
@@ -88,7 +88,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
                     _connection.CallbackException += OnCallbackException;
                     _connection.ConnectionBlocked += OnConnectionBlocked;
 
-                    _logger.LogInformation($"RabbitMQ persistent connection acquired a connection {_connection.Endpoint.HostName} and is subscribed to failure events");
+                    _logger.LogInformation("RabbitMQ acquired a persistent connection to '{HostName}' and is subscribed to failure events", _connection.Endpoint.HostName);
 
                     return true;
                 }

src/BuildingBlocks/EventBus/EventBusRabbitMQ/EventBusRabbitMQ.cs

@@ -76,7 +76,7 @@ namespace Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ
                 .Or<SocketException>()
                 .WaitAndRetry(_retryCount, retryAttempt => TimeSpan.FromSeconds(Math.Pow(2, retryAttempt)), (ex, time) =>
                 {
-                    _logger.LogWarning(ex.ToString());
+                    _logger.LogWarning(ex, "Could not publish event: {EventId} after {Timeout}s ({ExceptionMessage})", @event.Id, $"{time.TotalSeconds:n1}", ex.Message);
                 });
 
             using (var channel = _persistentConnection.CreateModel())