ibmcloud: fix toList empty-whitespace handling

The toList helper did not correctly handle inputs containing empty
elements or values with surrounding whitespace. Comma‑separated lists
with such formatting caused parsing issues for all functions that rely
on the custom types using this utility.

This change adds trimming logic and skips empty items entirely,
ensuring that the returned list contains only meaningful, sanitized
values.

Signed-off-by: Patrik Fodor <[email protected]>

Author: Pacho20

src/cloud-providers/ibmcloud/types.go

@@ -53,10 +53,21 @@ func (i *Images) Set(value string) error {
 }
 
 func toList(value, sep string) []string {
+	result := make([]string, 0)
+
 	if len(value) == 0 {
-		return make([]string, 0)
+		return result
+	}
+
+	splits := strings.Split(value, sep)
+	for _, split := range splits {
+		trimmed := strings.TrimSpace(split)
+		if trimmed != "" {
+			result = append(result, trimmed)
+		}
 	}
-	return strings.Split(value, sep)
+
+	return result
 }
 
 type tags []string