It was possible for some of the SAE test cases (e.g., ap_ft_sae) to fail
if they were run after the sae_groups test case that left the SAE group
configuration to a value that is not enabled by default. Fix this by
clearing sae_groups setting in the couple of test cases that were not
yet doing this.
Signed-off-by: Jouni Malinen <j@w1.fi>