Adding property with dot in name doesn't work

[Belorus]

if (Agent.IsConfigured && Agent.Tracer?.CurrentTransaction != null)
            {
                logEvent.AddOrUpdateProperty(propertyFactory.CreateProperty("transaction.id", Agent.Tracer.CurrentTransaction.Id ));
                logEvent.AddOrUpdateProperty(propertyFactory.CreateProperty("trace.id", Agent.Tracer.CurrentTransaction.TraceId ));
            }

Dots in field names are escaped, and therefore it's impossible to send trace.id field to employ APM log correlation without writing custom JSON Serializer. It is written as trace/id

https://github.com/serilog/serilog-sinks-elasticsearch/blob/dev/src/Serilog.Formatting.Elasticsearch/ElasticsearchJsonFormatter.cs#L154

[mivano]

I just merged PR #351 into dev. That should address this issue.