fixed a string and added beta zabbix template

PVE-Zabbix.py

@@ -57,7 +57,7 @@ def exec_storage(**kwargs):
             stor = next(v for v in stors if (v.name == kwargs['name'] and v.node == NODE.name))
             print stor.get_storageinfo(kwargs['param'])
         except StopIteration:
-            print "No such VM found. Possible VMs: " + str(VM.get_vmnames(NODE))
+            print "No such storage found. Possible VMs: " + str(Storage.get_storagenames(NODE))
     else:
         print listofdicts_to_zabbix_json(
             Storage.get_storagenames(NODE, name=kwargs['name'], listing=kwargs['listing']))