fix_stopping_game

[Yuhu-kth]

Hi,
I tried to write the test_step function for stopping_game_env and stopping_game_mdp.
But its different from pomdp, I didn't really understand how it works.
For example, in stopping_game_env, the action_profie, I don't know how to initialize it.
Also, in stopping_game_mdp, param pi2 is attacker stage policy, I called the function calculate_stage_policy to get it, but it seems not right.

[Limmen]

@Yuhu-kth
I see, change it to this:

from csle_common.dao.simulation_config.action import Action
defender_actions = list(map(lambda x: Action(id=x, descr=""), self.config.A1))
defender_strategy = RandomPolicy(actions=defender_actions, player_type=PlayerType.DEFENDER,
                                         stage_policy_tensor=list(defender_stage_strategy))

But move the import statement to the top of the file instead.
Also, I think there is a bug in the test_step of test_stopping_game_pomdp, where the actions should be defined in this way as well, you can fix that also.

Let me know if it works

[Yuhu-kth]

@Yuhu-kth I see, change it to this:

from csle_common.dao.simulation_config.action import Action
defender_actions = list(map(lambda x: Action(id=x, descr=""), self.config.A1))
defender_strategy = RandomPolicy(actions=defender_actions, player_type=PlayerType.DEFENDER,
                                         stage_policy_tensor=list(defender_stage_strategy))

But move the import statement to the top of the file instead. Also, I think there is a bug in the test_step of test_stopping_game_pomdp, where the actions should be defined in this way as well, you can fix that also.

Let me know if it works

Thanks, it works, fixed the issue and ran flake8&mypy, pushed the code.