packaging/tests are failing

[zeph]

either via $ python3 setup.py test or attempting a debian packaging

>       assert fams[0].samples == [('temper_temperature_celsius', {'name': 'foo', 'phy': ':phy:', 'version': 'VERSIONSTRING___'}, 22)]
E       AssertionError: assert [Sample(name=...xemplar=None)] == [('temper_temp...ING___'}, 22)]
E         At index 0 diff: Sample(name='temper_temperature_celsius', labels={'name': 'foo', 'phy': ':phy:', 'version': 'VERSIONSTRING___'}, value=22, timestamp=None, exemplar=None) != ('temper_temperature_celsius', {'name': 'foo', 'phy': ':phy:', 'version': 'VERSIONSTRING___'}, 22)
E         Use -v to get the full diff

test/test_exporter.py:33: AssertionError

seems a pretty straight forward fix, I'll try to bake it