Problem with run/list filtered by run ids

    def test_get_runs_list(self):
        # TODO: comes from live, no such lists on test
        openml.config.server = self.production_server
        runs = openml.runs.list_runs(id=[2])
        self.assertEqual(len(runs), 1)
        for rid in runs:
            self._check_run(runs[rid])

For the following test, there is no run with id 2 in openml.org
https://www.openml.org/api/v1/run/list/run/2

However this shows that it exists in the live server:
https://www.openml.org/r/2
It happens even with the latest runs from the live server. Occurs also on the test server.
It also fails test_get_runs_list_by_filters.
test_get_runs_list_by_flow is also failing, although it has runs built on top of it.
I would say all the other run lists with different filters are failing because of this reason.

@janvanrijn @mfeurer

Start with test_get_runs_list, test_get_runs_list_by_filters, and test_get_runs_list_by_flow, then compare their requests with the run/list/run/2 endpoint and the live run page. Done means the filtered run-list tests pass consistently on the live and test servers, including the expected run and flow results.