net/mlx5: handle yellow case in default meter policy

net/mlx5: handle yellow case in default meter policy

In order to support the yellow color for the default meter policy,
the default policy action for yellow should be created together
with the green policy.

The default policy action for yellow action is the same as that for
green. In the same table, the same matcher will be reused for yellow
and the destination group will be the same.

Signed-off-by: Bing Zhao <bingz@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>