selftests/bpf: Add test cgrp_local_storage to DENYLIST.s390x

Test cgrp_local_storage have some programs utilizing trampoline.
Arch s390x does not support trampoline so add the test to
the corresponding DENYLIST file.

Signed-off-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20221026042917.675685-1-yhs@fb.com


Signed-off-by: Alexei Starovoitov <ast@kernel.org>