fix(sendconfig) suppress deck diff logs at info

Disable deck's full diff output at log level info and above. diffs will
only print at debug or trace.

CHANGELOG.md

@@ -72,13 +72,17 @@
   [#2389](https://github.com/Kong/kubernetes-ingress-controller/issues/2389)
 
 #### Fixed
+
 - Added a mechanism to retry the initial connection to the Kong
   Admin API on controller start to fix an issue where the controller
   pod could crash loop on start when waiting for Gateway readiness 
   (e.g. if the Gateway is waiting for its database to initialize). 
   The new retry mechanism can be manually configured using the 
   `--kong-admin-init-retries` and `--kong-admin-init-retry-delay` flags.
   [#2274](https://github.com/Kong/kubernetes-ingress-controller/issues/2274)
+- diff logging now honors log level instead of printing at all log levels. It
+  will only print at levels `debug` and `trace`.
+  [#2422](https://github.com/Kong/kubernetes-ingress-controller/issues/2422)
 
 ## [2.3.1]
 

internal/manager/setup.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/bombsimon/logrusr/v2"
 	"github.com/go-logr/logr"
+	"github.com/kong/deck/cprint"
 	"github.com/kong/go-kong/kong"
 	"github.com/sirupsen/logrus"
 	corev1 "k8s.io/api/core/v1"
@@ -43,6 +44,11 @@ func setupLoggers(c *Config) (logrus.FieldLogger, logr.Logger, error) {
 	logger := logrusr.New(deprecatedLogger)
 	ctrl.SetLogger(logger)
 
+	if c.LogLevel != "trace" && c.LogLevel != "debug" {
+		// disable deck's per-change diff output
+		cprint.DisableOutput = true
+	}
+
 	return deprecatedLogger, logger, nil
 }