[tests] Stricter checking of FreeRADIUS open ports

(cherry picked from commit a3dca2f)

Author: nemesifier

molecule/resources/verify.yml

@@ -63,5 +63,5 @@
     - name: Check if FreeRADIUS is listening on WPA Enterprise site ports
       shell: "netstat -tuln | grep -Eq '1822|1823|18230'"
       register: freeradius_eap_ports  # Register the output and return code
-      failed_when: freeradius_eap_ports.rc
+      failed_when: freeradius_eap_ports.rc | int != 0
       changed_when: false