example playbooks: Fix invalid variable in ipapermission playbooks.

ipapremission playbooks were using the invalid attribute `perm_right`.
The attribute was changed to `right`.

playbooks/permission/permission-allow-read-employeenum.yml

@@ -8,7 +8,7 @@
     ipapermission:
       name: TestPerm2
       object_type: user
-      perm_rights: 
+      right:
         - read
         - search
         - compare

playbooks/permission/permission-present.yml

@@ -8,4 +8,4 @@
     ipapermission:
       name: TestPerm1
       object_type: host
-      perm_rights: all
+      right: all