Minor JSON field name fixes and additions (#865)

* Change JSON supernodes field to match the struct member name

* Add some missing fields to the edge json output.

src/edge_management.c

@@ -126,7 +126,7 @@ static void mgmt_supernodes (n2n_edge_t *eee, char *udp_buf, const struct sockad
  "\"macaddr\":\"%s\","
  "\"sockaddr\":\"%s\","
  "\"selection\":\"%s\","
- "\"lastseen\":%li,"
+ "\"last_seen\":%li,"
  "\"uptime\":%li}\n",
  tag,
  peer->version,
@@ -156,17 +156,23 @@ static void mgmt_edges_row (n2n_edge_t *eee, char *udp_buf, const struct sockadd
  "\"mode\":\"%s\","
  "\"ip4addr\":\"%s\","
  "\"purgeable\":%i,"
+ "\"local\":%i,"
  "\"macaddr\":\"%s\","
  "\"sockaddr\":\"%s\","
  "\"desc\":\"%s\","
+ "\"last_p2p\":%li,\n"
+ "\"last_sent_query\":%li,\n"
  "\"last_seen\":%li}\n",
  tag,
  mode,
  (peer->dev_addr.net_addr == 0) ? "" : ip_subnet_to_str(ip_bit_str, &peer->dev_addr),
  peer->purgeable,
+ peer->local,
  (is_null_mac(peer->mac_addr)) ? "" : macaddr_str(mac_buf, peer->mac_addr),
  sock_to_cstr(sockbuf, &(peer->sock)),
  peer->dev_desc,
+ peer->last_p2p,
+ peer->last_sent_query,
  peer->last_seen);
 
  sendto(eee->udp_mgmt_sock, udp_buf, msg_len, 0 /*flags*/,