Fix deserialization for Deploment model

[gabber12]

No description provided.

[solarkennedy]

I don't know why this is "new", but on py36 tests can you fix:

toolbelt==0.9.1,urllib3==1.25.9,zipp==3.1.0

pep8 run-test-pre: PYTHONHASHSEED='210895343'

pep8 run-test: commands[0] | flake8 .

./tests/test_model_deployment.py:11:26: E225 missing whitespace around operator

./tests/test_model_deployment.py:11:161: E501 line too long (330 > 160 characters)

./tests/test_model_deployment.py:12:1: W293 blank line contains whitespace

./tests/test_model_deployment.py:16:1: W391 blank line at end of file

ERROR: InvocationError for command /home/travis/build/thefactory/marathon-python/.tox/pep8/bin/flake8 . (exited with code 1)

[missingcharacter]

@solarkennedy would this be enough?

from marathon.models.deployment import MarathonDeployment
import unittest


class MarathonDeploymentTest(unittest.TestCase):

    def test_env_defaults_to_empty_dict(self):
        """
        é testé
        """
        deployment_json = {
                "id": "ID",
                "version": "2020-05-30T07:35:04.695Z",
                "affectedApps": ["/app"],
                "affectedPods": [],
                "steps": [{
                    "actions": [{
                        "action": "RestartApplication",
                        "app": "/app"
                    }]
                }],
                "currentActions": [{
                    "action": "RestartApplication",
                    "app": "/app",
                    "readinessCheckResults": []
                }],
                "currentStep": 1,
                "totalSteps": 1
        }

        deployment = MarathonDeployment.from_json(deployment_json)
        self.assertEquals(deployment.id, "ID")
        self.assertEquals(deployment.current_actions[0].app, "/app")

[solarkennedy]

I can't quite tell, but just do what flake8 wants to make the build green?

[missingcharacter]

I'm closing this one in favor of #276