The interface metadata does not persist in the storehouse

[cmagnobarbosa]

The interface metadata does not persist in the storehouse. After kytos restart, metadata information is lost.

How to reproduce:

• Run kytos (kytosd -f).
• Start a network topology (e.g , mn - linear top, 3 --controller = remote, ip = 127.0.0.1, port = 6653)
• Add metadata to the interface:
  • POST http://0.0.0.0:8181/api/kytos/topology/v3/interfaces/<interface_id>/metadata
    • Payload { 'test':'metadata'}
• Close the kytos (exit)
• Start kytos again.
• Check the interface metadata.

Expected behavior:

• Retrieve the metadata added to the interface, after kytos restart.

This persistence of metadata works for switches.

Related: kytos/kytos#1127