Added aix skip needs work to getgroups.cf test

The test expecs root, bin, daemon - in that order. However, on aix it is
root, daemon, bin.

Ticket: ENT-13504, CFE-4605
Signed-off-by: Lars Erik Wik <lars.erik.wik@northern.tech>

Author: larsewi

tests/acceptance/01_vars/02_functions/getgroups.cf

@@ -17,9 +17,11 @@ bundle agent check
     "description" -> { "ENT-12722" }
       string => "Test whether the entries of getroups() are like the ones inside /etc/group";
     "test_skip_needs_work"
-      string => "suse_15|sles_15",
-      comment => "expects first three groups are root, bin, daemon but on suse_15 they are root, shadow, trusted.",
-      meta => { "ENT-13504" };
+      string => "suse_15|sles_15|aix",
+      comment => "expects first three groups are root, bin, daemon. However, on:
+ - suse_15 they are root, shadow, trusted.
+ - aix they are root, daemon, bin (i.e. different order).",
+      meta => { "ENT-13504", "CFE-4605" };
 
     "test_skip_unsupported"
       string => "windows";