false-positive on e2e sleeper test

[pcrespov]

• Sleeper test was passing but it was actually not running
• talk to OM to describe https://git.speag.com/oSparc/e2e-testing/-/jobs/1196994/artifacts/file/osparc-simcore/tests/e2e/screenshots/10-08-45_Sleepers_toDashboard_before.jpg

[pcrespov]

@odeimaiz could you please have a first look at this and see how feasible it would be to solve it?