research daemonset with detect problems with counters

[Uburro]

To get infiniband flaps stats, we need to (manually) check counter /sys/class/infiniband/mlx5_[01234567]/ports/1/counters/link_downed for every mlx5_0. Non-zero counter should be checked; increase of > 10 is strong ib flap indicator.
Counters are increasing since host boot.
There is no direct access to mlx5_0 counters from inside worker.