net/mlx5e: TC, Make post_act parse CT and sample actions

Before this commit post_act can be used for normal rules
and didn't handle special cases like CT and sample.
With this commit post_act rule can also handle the special cases
when needed.

Signed-off-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>