Reverted changes to custom timeseries

scripts/lua/modules/timeseries/custom/ts_minute_custom.lua.sample

@@ -0,0 +1,34 @@
+--
+-- (C) 2019 - ntop.org
+--
+
+local ts_utils = require "ts_utils_core"
+
+local ts_custom = {}
+
+local function setup()
+   -- SCHEMAS MUST BE ADDED IN THIS FUNCTION
+   --
+   -- This is an example of a minute (60 sec) counter
+   --
+   local schema
+   
+   schema = ts_utils.newSchema("iface:tcp_seq_errors", {step = 60})
+   schema:addTag("ifid")
+   schema:addMetric("packets")
+end
+
+function ts_custom.iface_update_stats(when, _ifname, ifstats, verbose)
+   -- THIS IS THE FUNCTION THAT IS CALLED EVERY MINUTE BY NTOPNG
+   -- USE THIS TO append() TO THE TIMESERIES
+
+   ts_utils.append("iface:tcp_seq_errors",
+		   {ifid = ifstats.id,
+		    packets = ifstats.tcpPacketStats.retransmissions
+		       + ifstats.tcpPacketStats.out_of_order
+		       + ifstats.tcpPacketStats.lost},
+		   when, verbose)
+end
+
+setup()
+return ts_custom