e2e `test_070_run_sdntrace_untagged_vlan` is failing (April 10 nightly exec)

[viniarck]

@gretelliz e2e test test_070_run_sdntrace_untagged_vlan is still failing on CI, can you fix this?

tests/test_e2e_40_sdntrace.py::TestE2ESDNTrace::test_070_run_sdntrace_untagged_vlan: 2023-04-10,06:45:44.852582 - 2023-04-10,06:45:46.065119
cls = <tests.test_e2e_40_sdntrace.TestE2ESDNTrace object at 0x7f1bad746fa0>
    def test_070_run_sdntrace_untagged_vlan(cls):
        """Run SDNTrace to test /traces endpoint when vlan is untagged in evc"""

        cls.create_evc("untagged", interface_a="00:00:00:00:00:00:00:02:1", interface_z="00:00:00:00:00:00:00:03:1")
        payload = [
                    {
                        "trace": {
                            "switch": {
                                "dpid": "00:00:00:00:00:00:00:02",
                                "in_port": 1
                            }
                        }
                    }
        ]

        api_url = KYTOS_API + '/amlight/sdntrace_cp/traces'
        response = requests.put(api_url, json=payload)
        assert response.status_code == 200, response.text
        data = response.json()
        list_results = data["result"]

>       assert len(list_results[0]) == 2
E       AssertionError: assert 1 == 2
E        +  where 1 = len([{'dpid': '00:00:00:00:00:00:00:02', 'out': None, 'port': 1, 'time': '2023-04-10 06:45:45.992499', ...}])
tests/test_e2e_40_sdntrace.py:797: AssertionError
rerun: 1
tests/test_e2e_40_sdntrace.py::TestE2ESDNTrace::test_070_run_sdntrace_untagged_vlan: 2023-04-10,06:45:46.241127 - 2023-04-10,06:45:46.424571
cls = <tests.test_e2e_40_sdntrace.TestE2ESDNTrace object at 0x7f1bad746fa0>
    def test_070_run_sdntrace_untagged_vlan(cls):
        """Run SDNTrace to test /traces endpoint when vlan is untagged in evc"""

>       cls.create_evc("untagged", interface_a="00:00:00:00:00:00:00:02:1", interface_z="00:00:00:00:00:00:00:03:1")
tests/test_e2e_40_sdntrace.py:779: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
vlan_id = 'untagged', interface_a = '00:00:00:00:00:00:00:02:1'
interface_z = '00:00:00:00:00:00:00:03:1'
    @staticmethod
    def create_evc(vlan_id, interface_a="00:00:00:00:00:00:00:01:1", interface_z="00:00:00:00:00:00:00:0a:1"):
        payload = {
            "name": "Vlan_%s" % vlan_id,
            "enabled": True,
            "dynamic_backup_path": True,
            "uni_a": {
                "interface_id": interface_a,
                "tag": {"tag_type": 1, "value": vlan_id}
            },
            "uni_z": {
                "interface_id": interface_z,
                "tag": {"tag_type": 1, "value": vlan_id}
            }
        }
        api_url = KYTOS_API + '/kytos/mef_eline/v2/evc/'
        response = requests.post(api_url, json=payload)
>       assert response.status_code == 201, response.text
E       AssertionError: {"code":409,"description":"The EVC already exists.","name":"Conflict"}
E         
E       assert 409 == 201
E        +  where 409 = <Response [409]>.status_code
tests/test_e2e_40_sdntrace.py:46: AssertionError
tests/test_e2e_40_sdntrace.py::TestE2ESDNTrace::test_070_run_sdntrace_untagged_vlan: 2023-04-10,06:45:46.515972 - 2023-04-10,06:45:46.569[379](https://gitlab.ampath.net/kytos/kytos-end-to-end-tester/-/jobs/42821#L379)
=========================== rerun test summary info ============================
RERUN tests/test_e2e_40_sdntrace.py::TestE2ESDNTrace::test_070_run_sdntrace_untagged_vlan
RERUN tests/test_e2e_40_sdntrace.py::TestE2ESDNTrace::test_070_run_sdntrace_untagged_vlan
=========================== short test summary info ============================
FAILED tests/test_e2e_40_sdntrace.py::TestE2ESDNTrace::test_070_run_sdntrace_untagged_vlan - AssertionError: {"code":[409](https://gitlab.ampath.net/kytos/kytos-end-to-end-tester/-/jobs/42821#L409),"description":"The EVC already exists.","name":"Conflict"}

assert 409 == 201
 +  where 409 = <Response [409]>.status_code
= 1 failed, 202 passed, 2 skipped, 17 xfailed, 5 xpassed, 799 warnings, 2 rerun in 11492.58s (3:11:32) =