[erlang-questions] Rebar to run CT

[Tuncer Ayaz]

{erl_opts, [
    debug_info,
    fail_on_warning,
    {parse_transform, lager_transform}
]}.

should be

{erl_opts, [
    warnings_as_errors,
    {parse_transform, lager_transform}
]}.

to use the right compiler flag and omit what's already
enabled by default.