Set logger up with log level and JSON flags

This is the GitOps Toolkit convention.  This commit also puts the
flags in the base deployment config, in the same order as for other
GOTK controllers.

Signed-off-by: Michael Bridgen <michael@weave.works>

config/manager/manager.yaml

@@ -34,6 +34,9 @@ spec:
               fieldRef:
                 fieldPath: metadata.namespace
         args:
+        - --watch-all-namespaces
+        - --log-level=info
+        - --log-json
         - --enable-leader-election
         resources:
           limits:

main.go

@@ -24,9 +24,9 @@ import (
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
 	ctrl "sigs.k8s.io/controller-runtime"
-	"sigs.k8s.io/controller-runtime/pkg/log/zap"
 
 	imagev1alpha1_reflect "github.com/fluxcd/image-reflector-controller/api/v1alpha1"
+	"github.com/fluxcd/pkg/runtime/logger"
 	sourcev1 "github.com/fluxcd/source-controller/api/v1beta1"
 
 	imagev1alpha1_auto "github.com/fluxcd/image-automation-controller/api/v1alpha1"
@@ -52,6 +52,8 @@ func main() {
 	var (
 		metricsAddr          string
 		enableLeaderElection bool
+		logLevel             string
+		logJSON              bool
 		watchAllNamespaces   bool
 	)
 
@@ -59,11 +61,13 @@ func main() {
 	flag.BoolVar(&enableLeaderElection, "enable-leader-election", false,
 		"Enable leader election for controller manager. "+
 			"Enabling this will ensure there is only one active controller manager.")
+	flag.StringVar(&logLevel, "log-level", "info", "Set logging level. Can be debug, info or error.")
+	flag.BoolVar(&logJSON, "log-json", false, "Set logging to JSON format.")
 	flag.BoolVar(&watchAllNamespaces, "watch-all-namespaces", true,
 		"Watch for custom resources in all namespaces, if set to false it will only watch the runtime namespace.")
 	flag.Parse()
 
-	ctrl.SetLogger(zap.New(zap.UseDevMode(true)))
+	ctrl.SetLogger(logger.NewLogger(logLevel, logJSON))
 
 	watchNamespace := ""
 	if !watchAllNamespaces {