add Discord handler to Kapacitor (#31972)

metrics/metrics-main/kapacitor.conf

@@ -252,6 +252,18 @@ default-retention-policy = ""
   global = false
   json-data = false
 
+[[discord]]
+  enabled = true
+  default = true
+  url = "https://discordapp.com/api/webhooks/xxxxxxxxxxxxxxxxxx/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+  workspace = "guild-alerts"
+  timestamp = true
+  username = "AlertBot"
+  avatar-url = "https://influxdata.github.io/branding/img/downloads/influxdata-logo--symbol--pool-alpha.png"
+  embed-title = "Alert"
+  global = false
+  state-changes-only = false
+
 [reporting]
   enabled = true
   url = "https://usage.influxdata.com"