Load external modules in the function node

[Colin]

I suspect that the reason you had trouble using the node in a subflow may be down to this.

Using Influxdb node in a subflow - cannot set scope of config node

If I add an MQTT node to a subflow, then in the server setup I select to add a new server, then at the bottom of config node's edit screen I get a dropdown that allows me to select the subflow as the context for the node. However, if I do the same with Influxdb node from node-red-contrib-influxdb then the db config node does not have that dropdown. That, I believe, prevents me from specifying the database via subflow properties, which requires a separate config node for each instance of the su…