Leaky Relu function

def leaky_relu(attrs, inputs, proto_obj):
    """Leaky Relu function"""
    if 'alpha' in attrs:
        new_attrs = translation_utils._fix_attribute_names(attrs, {'alpha' : 'slope'})
    else:
        new_attrs = translation_utils._add_extra_attributes(attrs, {'slope': 0.01})
    return 'LeakyReLU', new_attrs, inputs