E2E: oversubscription assertion needs to wait for stats (#12540)
E2E: oversubscription assertion needs to wait for stats (#12540)

The oversubscription test expects an output that requires the client
has polled the task for stats at least once. Wait long enough to
ensure that we've polled the stats before failing the test.
hashicorp/nomad,hashicorp/nomad,hashicorp/nomad,hashicorp/nomad,hashicorp/nomad,hashicorp/nomad