Error when handling new switch event and using vlan_pool

[italovalcy]

Hi,

Using vlan_pool config gives the following error:

Jun 15 17:58:22 be420d5eb226 kytos.core.controller:INFO controller:713:  Loading vlan_pool configuration for dpid 00:00:00:00:00:00:00:03
Jun 15 17:58:22 be420d5eb226 kytos.napps.kytos/of_core:INFO main:158:  Connection ('127.0.0.1', 48418), Switch 00:00:00:00:00:00:00:03: OPENFLOW HANDSHAKE COMPLETE
Jun 15 17:58:22 be420d5eb226 kytos.core.interface:WARNING interface:340:  Couldn't get port 2 speed, sw 00:...:03, feats None
Jun 15 17:58:22 be420d5eb226 kytos.core.helpers:ERROR helpers:143:  listen_to handler: <function Main.on_new_switch at 0x7f73445a1a60>, args: (<Main(topology, stopped 140129943414528)>, KytosEvent('kytos/core.switch.new', {'switch': Switch('00:00:00:00:00:00:00:03')}, 0)) traceback: Traceback (most recent call last):,   File "/usr/local/lib/python3.9/dist-packages/kytos/core/helpers.py", line 139, in handler_context,     result = handler(*args),   File "//var/lib/kytos/napps/kytos/topology/main.py", line 662, in on_new_switch,     self.handle_new_switch(event),   File "//var/lib/kytos/napps/kytos/topology/main.py", line 668, in handle_new_switch,     self.topo_controller.upsert_switch(switch.id, switch.as_dict()),   File "/usr/local/lib/python3.9/dist-packages/tenacity/__init__.py", line 324, in wrapped_f,     return self(f, *args, **kw),   File "/usr/local/lib/python3.9/dist-packages/tenacity/__init__.py", line 404, in __call__,     do = self.iter(retry_state=retry_state),   File "/usr/local/lib/python3.9/dist-packages/tenacity/__init__.py", line 349, in iter,     return fut.result(),   File "/usr/lib/python3.9/concurrent/futures/_base.py", line 433, in result,     return self.__get_result(),   File "/usr/lib/python3.9/concurrent/futures/_base.py", line 389, in __get_result,     raise self._exception,   File "/usr/local/lib/python3.9/dist-packages/tenacity/__init__.py", line 407, in __call__,     result = fn(*args, **kwargs),   File "/usr/local/lib/python3.9/dist-packages/kytos/core/retry.py", line 25, in decorated,     return func(*args, **kwargs),   File "//var/lib/kytos/napps/../napps/kytos/topology/controllers/__init__.py", line 111, in upsert_switch,     model = SwitchDoc(,   File "pydantic/main.py", line 331, in pydantic.main.BaseModel.__init__, pydantic.error_wrappers.ValidationError: 2 validation errors for SwitchDoc, interfaces -> 0 -> mac,   none is not an allowed value (type=type_error.none.not_allowed), interfaces -> 0 -> speed,   none is not an allowed value (type=type_error.none.not_allowed),

Steps to reproduce:

1. Create a simple topology in MN (using linear,3 here)
2. Config Kytos's vlan_pool for a certain link:

# grep vlan_pool /etc/kytos/kytos.conf
# vlan_pool = {}
vlan_pool = {"00:00:00:00:00:00:00:02": {"3": [[100, 200]]}, "00:00:00:00:00:00:00:03": {"2":[[100, 200]]}}

3. Start kytos and monitor logs (/var/log/syslog or console)

[viniarck]

@Alopalao once your related PRs land, let's close this one here and also point out how tag_ranges can be set, probably pointing a e2e test for a ref.

[viniarck]

Landed on #166