Update defaults.yml - remove quotes for net_area_number (#522)

Update defaults.yml - remove quotes for net_area_number

Author: juburnet

roles/validate/files/defaults.yml

@@ -203,7 +203,7 @@ factory_defaults:
         authentication_key_id: 127
       isis:
         level: level-2
-        net_area_number: "0001"
+        net_area_number: 0001
         network_point_to_point: true
         authentication_enable: false
         authentication_key_id: 127