Test if changing the PATH variable works correctly

[zadigus]

It's about this test that used to be failing on Jelastic, which is not acceptable:

def test_set_container_env_vars_by_group_bug(
        control_client: ControlClient,
        valid_environment_with_env_vars: str
):
    # Arrange
    vars_to_set = {
        "MY_FIRST_NEW_VAR": "value1",
        "MY_SECOND_NEW_VAR": "value2"
    }
    initial_env_vars = control_client.get_container_env_vars_by_group(valid_environment_with_env_vars, "cp")
    assert "PATH" in initial_env_vars

    # Act
    control_client.set_container_env_vars_by_group(valid_environment_with_env_vars, vars=vars_to_set, node_group="cp")
    actual_env_vars = control_client.get_container_env_vars_by_group(valid_environment_with_env_vars, "cp")

    # Assert
    assert "PATH" in actual_env_vars