ifconfig: T2653: convert VLAN interfaces do discrete class

Instead of using an Adapter pattern to make interfaces VLAN-aware, create a
derived class named VLANIf to represent a VLAN. This change was necessary to
eliminate mixed code in Interfaces class which was VLAN - free, but recently
gained some VLAN specific code for set_admin_state().

In addition this "autoresolves" the issue in T2894 as a bond vlan interface
will no longer change the lower interface.

1 files changed, 2 insertions, 3 deletions

diff --git a/python/vyos/ifconfig/operational.py b/python/vyos/ifconfig/operational.py
index d585c1873..33e8614f0 100644
--- a/python/vyos/ifconfig/operational.py
+++ b/python/vyos/ifconfig/operational.py
@@ -14,20 +14,19 @@
 # License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 import os
+
 from time import time
 from datetime import datetime
 from functools import reduce
-
 from tabulate import tabulate
 
 from vyos.ifconfig import Control
 
-
 class Operational(Control):
     """
     A class able to load Interface statistics
     """
-    
+
     cache_magic = 'XYZZYX'
 
     _stat_names = {