The test often fails when running in parallel to other tests as very little memory is left. 389-ds memory autotuning causes database backend to refuse working in such cases. 389-ds team suggested more memory has to be made available. Increate RAM for this test to 2.5GB instead of 2.2GB. Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com> Reviewed-By: Rob Crittenden <rcritten@redhat.com>