net/mlx5: DR, Change push vlan action sequence

The DR TX state machine supports the following order:
modify header, push vlan and encapsulation.
Instead fs_dr would pass:
push vlan, modify header and encapsulation.

The above caused the rule creation to fail on invalid action
sequence provided error.

Fixes: 6a48faee

 ("net/mlx5: Add direct rule fs_cmd implementation")
Signed-off-by: Alex Vesker <valex@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>