Add device-type, to ensure that plan --novpp generates MTU statements

vppcfg/config/__init__.py

@@ -75,7 +75,8 @@ class Validator:
 
     The purpose is to  ensure that the YAML file is both syntactically correct,
     which is ensured by Yamale, and semantically correct, which is ensured by a set
-    of built-in validators, and user-added validators (see the add_validator() method)."""
+    of built-in validators, and user-added validators (see the add_validator() method).
+    """
 
     def __init__(self, schema):
         self.logger = logging.getLogger("vppcfg.config")

vppcfg/example.yaml

@@ -7,13 +7,16 @@ bondethernets:
 
 interfaces:
   GigabitEthernet3/0/0:
+    device-type: dpdk
     mtu: 9000
     description: "LAG #1"
   GigabitEthernet3/0/1:
+    device-type: dpdk
     mtu: 9000
     description: "LAG #2"
 
   HundredGigabitEthernet12/0/0:
+    device-type: dpdk
     lcp: "ice12-0-0"
     mac: f2:01:00:12:00:00
     mtu: 9000
@@ -34,6 +37,7 @@ interfaces:
           exact-match: True
 
   HundredGigabitEthernet12/0/1:
+    device-type: dpdk
     mtu: 2000
     description: "Bridged"