Fix features of 'none' device

The changes made in #3532 fixed the CI/CD harness that checks the
integration tests against the 'none' device. As more tests being run,
we have to update the device features to pass this expanded set of tests.

Author: ipspace

netsim/devices/none.yml

@@ -92,6 +92,7 @@ features:
     vpn: True
     6pe: True
   ospf:
+    areas: true
     unnumbered: True
     import: [ bgp, isis, ripv2, connected, static, vrf ]
     default.policy: true