Update services/secondary-storage/server/src/main/java/org/apache/cloudstack/storage/resource/NfsSecondaryStorageResource.java

Co-authored-by: Wei Zhou <weizhou@apache.org>

Author: DaanHoogland

services/secondary-storage/server/src/main/java/org/apache/cloudstack/storage/resource/NfsSecondaryStorageResource.java

@@ -2314,7 +2314,7 @@ private boolean ruleNeedsAdding(String rule) {
         Script command = new Script("/bin/bash", s_logger);
         command.add("-c");
         command.add("iptables -C");
-        command.add("rule");
+        command.add(rule);
 
         String r1 = command.execute();
         return (r1 != null && r1.contains("iptables: Bad rule (does a matching rule exist in that chain?)."));