[Fix] `update_port_status` on `OFPPR_DELETE` to deactivate an interface

[viniarck]

Fixes #20, this addressed the first requirement, the other two ones were broken down to be addressed on issue 39 on topology:

Description of the change

[1.7.0] - 2022-01-04

Changed

• Changed update_port_status on OFPPR_DELETE to deactivate an interface instead of deleting it to keep the same object reference that topology uses when managing the status of a link.

Local exploratory test

• Before shutting down mininet, all interfaces are active from the topology perspective:

❯ http http://127.0.0.1:8181/api/kytos/topology/v3/interfaces | jq -r '.interfaces[].active'
true
true
true
true
true
true
true
true
true
true

• After shutting down mininet, all interfaces are active from the topology perspective (the only ones UP are OFPP_LOCAL):

❯ http http://127.0.0.1:8181/api/kytos/topology/v3/interfaces | jq -r '.interfaces[].active'
false
false
true
false
false
false
true
false
false
true

• After all switches reconnect again:

❯ http http://127.0.0.1:8181/api/kytos/topology/v3/interfaces | jq -r '.interfaces[].active'
true
true
true
true
true
true
true
true
true
true

[viniarck]

Appreciated your review, Antonio