[MM-15639] Add config setting to explicitly define which IP headers are trusted (#10907)

* Add config setting to explicitly define which IP headers are trusted

* fix variable shadowing

* Optimize code flow; Add Ratelimit test for header set

* Extend Ratelimit tests

* Add additional unit tests

* Structured logging

app/server.go

@@ -440,7 +440,7 @@ func (s *Server) Start() error {
 	if *s.Config().RateLimitSettings.Enable {
 		mlog.Info("RateLimiter is enabled")
 
-		rateLimiter, err := NewRateLimiter(&s.Config().RateLimitSettings)
+		rateLimiter, err := NewRateLimiter(&s.Config().RateLimitSettings, s.Config().ServiceSettings.TrustedProxyIPHeader)
 		if err != nil {
 			return err
 		}