Validation: add bundleMismatchWarning helper to warn user

This helper function is also going to used in follow up commit.
We also don't want user to show both warning in case user uses custom
bundle, so this patch also logs only respective warning as per bundle filename
or metadata.

pkg/crc/validation/validation.go

@@ -61,18 +61,7 @@ func ValidateBundlePath(bundlePath string, preset crcpreset.Preset) error {
 	}
 
 	userProvidedBundle := filepath.Base(bundlePath)
-	userProvidedBundle = bundle.GetBundleNameWithExtension(userProvidedBundle)
-	if userProvidedBundle != constants.GetDefaultBundle(preset) {
-		// Should append underscore (_) here, as we don't want crc_libvirt_4.7.15.crcbundle
-		// to be detected as a custom bundle for crc_libvirt_4.7.1.crcbundle
-		usingCustomBundle := strings.HasPrefix(bundle.GetBundleNameWithoutExtension(userProvidedBundle),
-			fmt.Sprintf("%s_", bundle.GetBundleNameWithoutExtension(constants.GetDefaultBundle(preset))))
-		if usingCustomBundle {
-			logging.Warnf("Using custom bundle %s", userProvidedBundle)
-			return nil
-		}
-		logging.Warnf("Using %s bundle, but %s is expected for this release", userProvidedBundle, constants.GetDefaultBundle(preset))
-	}
+	bundleMismatchWarning(userProvidedBundle, preset)
 	return nil
 }
 
@@ -86,6 +75,21 @@ func ValidateBundle(bundlePath string, preset crcpreset.Preset) error {
 	return nil
 }
 
+func bundleMismatchWarning(userProvidedBundle string, preset crcpreset.Preset) {
+	userProvidedBundle = bundle.GetBundleNameWithExtension(userProvidedBundle)
+	if userProvidedBundle != constants.GetDefaultBundle(preset) {
+		// Should append underscore (_) here, as we don't want crc_libvirt_4.7.15.crcbundle
+		// to be detected as a custom bundle for crc_libvirt_4.7.1.crcbundle
+		usingCustomBundle := strings.HasPrefix(bundle.GetBundleNameWithoutExtension(userProvidedBundle),
+			fmt.Sprintf("%s_", bundle.GetBundleNameWithoutExtension(constants.GetDefaultBundle(preset))))
+		if usingCustomBundle {
+			logging.Warnf("Using custom bundle %s", userProvidedBundle)
+		} else {
+			logging.Warnf("Using %s bundle, but %s is expected for this release", userProvidedBundle, constants.GetDefaultBundle(preset))
+		}
+	}
+}
+
 // ValidateIPAddress checks if provided IP is valid
 func ValidateIPAddress(ipAddress string) error {
 	ip := net.ParseIP(ipAddress).To4()