getWantConfigId

Phone wants radio to send full node db to the phone, This is
typically the first packet sent to the radio when the phone gets a
bluetooth connection. The radio will respond by sending back a
MyNodeInfo, a owner, a radio config and a series of
FromRadio.node_infos, and config_complete
the integer you write into this field will be reported back in the
config_complete_id response this allows clients to never be confused by
a stale old partially sent config.