enhance and fix log calls

Some of these changes are cosmetic (repeatedly calling klog.V instead of
reusing the result), others address real issues:

- Logging a message only above a certain verbosity threshold without
  recording that verbosity level (if klog.V().Enabled() { klog.Info... }):
  this matters when using a logging backend which records the verbosity
  level.

- Passing a format string with parameters to a logging function that
  doesn't do string formatting.

All of these locations where found by the enhanced logcheck tool from
kubernetes/klog#297.

In some cases it reports false positives, but those can be suppressed with
source code comments.

Partial cherry-pick of edffc70

cmd/kubeadm/app/util/users/users_linux.go

@@ -149,11 +149,11 @@ func addUsersAndGroupsImpl(pathLoginDef, pathUsers, pathGroups string) (*UsersAn
 	var loginDef string
 	f, close, err := openFileWithLock(pathLoginDef)
 	if err != nil {
-		klog.V(1).Info("Could not open %q, using default system limits: %v", pathLoginDef, err)
+		klog.V(1).Infof("Could not open %q, using default system limits: %v", pathLoginDef, err)
 	} else {
 		loginDef, err = readFile(f)
 		if err != nil {
-			klog.V(1).Info("Could not read %q, using default system limits: %v", pathLoginDef, err)
+			klog.V(1).Infof("Could not read %q, using default system limits: %v", pathLoginDef, err)
 		}
 		close()
 	}

pkg/registry/apps/deployment/storage/storage.go

@@ -398,7 +398,7 @@ func (i *scaleUpdatedObjectInfo) UpdatedObject(ctx context.Context, oldObj runti
 		if _, ok := replicasPathInDeployment[requestGroupVersion.String()]; ok {
 			groupVersion = requestGroupVersion
 		} else {
-			klog.Fatal("Unrecognized group/version in request info %q", requestGroupVersion.String())
+			klog.Fatalf("Unrecognized group/version in request info %q", requestGroupVersion.String())
 		}
 	}
 

pkg/registry/apps/replicaset/storage/storage.go

@@ -299,7 +299,7 @@ func (i *scaleUpdatedObjectInfo) UpdatedObject(ctx context.Context, oldObj runti
 		if _, ok := replicasPathInReplicaSet[requestGroupVersion.String()]; ok {
 			groupVersion = requestGroupVersion
 		} else {
-			klog.Fatal("Unrecognized group/version in request info %q", requestGroupVersion.String())
+			klog.Fatalf("Unrecognized group/version in request info %q", requestGroupVersion.String())
 		}
 	}
 

pkg/registry/apps/statefulset/storage/storage.go

@@ -286,7 +286,7 @@ func (i *scaleUpdatedObjectInfo) UpdatedObject(ctx context.Context, oldObj runti
 		if _, ok := replicasPathInStatefulSet[requestGroupVersion.String()]; ok {
 			groupVersion = requestGroupVersion
 		} else {
-			klog.Fatal("Unrecognized group/version in request info %q", requestGroupVersion.String())
+			klog.Fatalf("Unrecognized group/version in request info %q", requestGroupVersion.String())
 		}
 	}
 

pkg/registry/core/replicationcontroller/storage/storage.go

@@ -258,7 +258,7 @@ func (i *scaleUpdatedObjectInfo) UpdatedObject(ctx context.Context, oldObj runti
 		if _, ok := replicasPathInReplicationController[requestGroupVersion.String()]; ok {
 			groupVersion = requestGroupVersion
 		} else {
-			klog.Fatal("Unrecognized group/version in request info %q", requestGroupVersion.String())
+			klog.Fatalf("Unrecognized group/version in request info %q", requestGroupVersion.String())
 		}
 	}
 

staging/src/k8s.io/apiserver/pkg/registry/generic/registry/storage_factory.go

@@ -50,6 +50,7 @@ func StorageWithCacher() generic.StorageDecorator {
 			return s, d, err
 		}
 		if klog.V(5).Enabled() {
+			//nolint:logcheck // It complains about the key/value pairs because it cannot check them.
 			klog.InfoS("Storage caching is enabled", objectTypeToArgs(newFunc())...)
 		}
 

staging/src/k8s.io/component-base/logs/json/json_test.go

@@ -65,6 +65,7 @@ func TestZapLoggerInfo(t *testing.T) {
 		var buffer bytes.Buffer
 		writer := zapcore.AddSync(&buffer)
 		sampleInfoLogger, _ := NewJSONLogger(writer, nil)
+		// nolint:logcheck // The linter cannot and doesn't need to check the key/value pairs.
 		sampleInfoLogger.Info(data.msg, data.keysValues...)
 		logStr := buffer.String()