Add option to InfluxWriter to submit null records to InfluxDB after a timeout

[webbpinner]

Add option to InfluxWriter to submit null records to InfluxDB after a timeout

• This is useful for setting up Influx to detect when actual data stops flowing.
• The default timeout should be 30 seconds
• There should be the option to set a custom timeout (i.e. timeout=30)
• The default behavior should be to send the message to InfluxDB once
• There should be and option to send the message repeatedly (i.e. repeat=True).