013.cf: also skip failing test on aix

Ticket: ENT-13658
Signed-off-by: Lars Erik Wik <lars.erik.wik@northern.tech>

Author: larsewi

tests/acceptance/10_files/01_create/013.cf

@@ -33,7 +33,7 @@ bundle agent test
 {
   meta:
     "test_skip_needs_work" -> { "ENT-13658" }
-      string => "hpux";
+      string => "hpux|aix";
 
   vars:
       "owner" string => "nobody";