build: address 'intrange' linter warning

golangci-lint warns about this:

    for loop can be changed to use an integer range (Go 1.22+)
    (intrange)

Signed-off-by: Niels de Vos <ndevos@ibm.com>

internal/health-checker/filechecker_test.go

@@ -41,7 +41,7 @@ func TestFileChecker(t *testing.T) {
 		t.Error("checker failed to start")
 	}
 
-	for i := 0; i < 10; i++ {
+	for range 10 {
 		// check health, should be healthy
 		healthy, msg := checker.isHealthy()
 		if !healthy || msg != nil {

internal/health-checker/statchecker_test.go

@@ -41,11 +41,11 @@ func TestStatChecker(t *testing.T) {
 		t.Error("checker failed to start")
 	}
 
-	for i := 0; i < 10; i++ {
+	for i := range 10 {
 		// check health, should be healthy
 		healthy, msg := checker.isHealthy()
 		if !healthy || msg != nil {
-			t.Error("volume is unhealthy")
+			t.Errorf("volume is unhealthy after %d tries", i+1)
 		}
 
 		time.Sleep(time.Second)

internal/rbd/rbd_attach.go

@@ -210,7 +210,7 @@ func findDeviceMappingImage(ctx context.Context, pool, namespace, image string,
 
 // Stat a path, if it doesn't exist, retry maxRetries times.
 func waitForPath(ctx context.Context, pool, namespace, image string, maxRetries int, useNbdDriver bool) (string, bool) {
-	for i := 0; i < maxRetries; i++ {
+	for i := range maxRetries {
 		if i != 0 {
 			time.Sleep(time.Second)
 		}

internal/rbd/rbd_util_test.go

@@ -249,7 +249,7 @@ func TestStrategicActionOnLogFile(t *testing.T) {
 	tmpDir := t.TempDir()
 
 	var logFile [3]string
-	for i := 0; i < 3; i++ {
+	for i := range 3 {
 		f, err := os.CreateTemp(tmpDir, "rbd-*.log")
 		if err != nil {
 			t.Errorf("creating tempfile failed: %v", err)

internal/util/reftracker/reftracker_test.go

@@ -244,7 +244,7 @@ func TestRTRemove(t *testing.T) {
 			"ref3": reftype.Normal,
 		}
 
-		for i := 0; i < 2; i++ {
+		for range 2 {
 			created, err := Add(ioctx, rtName, refsToAdd)
 			require.NoError(ts, err)
 			require.True(ts, created)