util: exclude empty label values for crushlocation map

This commit resolves a bug where node labels with empty values
are processed for the crush_location mount option,
leading to invalid mount options and subsequent mount failures.

Signed-off-by: Praveen M <m.praveen@ibm.com>

internal/util/crushlocation.go

@@ -48,6 +48,10 @@ func getCrushLocationMap(crushLocationLabels string, nodeLabels map[string]strin
 	// Determine values for requested labels from node labels
 	crushLocationMap := make(map[string]string, len(labelsIn))
 	for key, value := range nodeLabels {
+		// label with empty value is not considered.
+		if value == "" {
+			continue
+		}
 		if _, ok := labelsIn[key]; !ok {
 			continue
 		}