Fix Telemetry Tesla crash

The :env tag is an struct and only String is supported. To send proper
tags we need to attach the function, parse the event and emit it again
as different event to be handled by TelemetryStatsD

apps/smokex_web/lib/smokex_web/telemetry.ex

@@ -57,12 +57,9 @@ defmodule SmokexWeb.Telemetry do
         ),
 
         # Tesla Metrics
-        summary("tesla.request.start.system_time", unit: {:native, :millisecond}, tags: [:env]),
-        summary("tesla.request.stop.duration", unit: {:native, :millisecond}, tags: [:env, :error]),
-        summary("tesla.request.exception.duration",
-          unit: {:native, :millisecond},
-          tags: [:kind, :reason]
-        ),
+        summary("tesla.request.start.system_time", unit: {:native, :millisecond}),
+        summary("tesla.request.stop.duration", unit: {:native, :millisecond}),
+        summary("tesla.request.exception.duration", unit: {:native, :millisecond}),
 
         # Database Metrics
         summary("smokex.repo.query.total_time", unit: {:native, :millisecond}),