Hone data hostname

[mikeiannacone]

When hone data is sent to the extractors, no hostname is specified, which means the flows and process info cannot be associated with their host. (This cannot be done using the src/dest addresses, because there is not a good way to determine which of these addresses belong to the machine the data was collected on.)

The options for including this seem to be:

• Include a hostname column in the CSV. This could come from the PcapNg metadata, described in their documentation
• Include a hostname as additional metadata when sending the message to rt. This could come from the config info for the collectors.

Both seem like reasonable approaches from my end, and there are probably others that would work just as well.