Add "sieve" to service monitoring and callback filtering

The "sieve" service has been added to the list of services monitored in the "monitoring.lua" script. Consequently, the conditional statement in the "callback.lua" script was updated to include the "sieve" service category. This ensures that the sieve service is appropriately tracked and managed.

Signed-off-by: Christian Roessner <c@roessner.co>

server/lua-plugins.d/callback/callback.lua

@@ -82,7 +82,7 @@ function nauthilus_run_callback()
         end
     end
 
-    if result.category == "service:imap" or result.category == "service:pop3" or result.category == "service:lmtp" then
+    if result.category == "service:imap" or result.category == "service:pop3" or result.category == "service:lmtp" or result.category == "service:sieve" then
         if result.dovecot_session ~= "unknown" then
             ---@type string redis_key
             local redis_key = "ntc:DS:" .. crypto.md5(result.user)

server/lua-plugins.d/filters/monitoring.lua

@@ -10,6 +10,7 @@ local wanted_protocols = {
     [4] = "pop3s",
     [5] = "lmtp",
     [6] = "lmtps",
+    [7] = "sieve", -- Not sure about this
 }
 
 ---@param request table