Looking at grafana it rarely fails in dev so unblacklisting it.
Though it is a little more flaky after switching to http 2 by default
because then we only have one channel and more requests end up queued in
the same channel, which will get errored out when the server
disconnects.
Task-number: QTBUG-88943
Change-Id: If5d6335864ce6bbc35f519b2c6d7068e4181afd2
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>