Fixing the expected neighbor command due to change in output format u…

…nder sonic-buildimage/pull/3036 (sonic-net#584)

- What I did
Fixed show interface neigh expected which was broken because of sonic-net/sonic-buildimage#3036

- How I did it
There was a change in the output format for --var-json option in sonic-config-engine,changes had to be done for show commands as well.

show/main.py

@@ -458,32 +458,32 @@ def expected(interfacename):
 
     #Swap Key and Value from interface: name to name: interface
     device2interface_dict = {}
-    for port in natsorted(neighbor_dict.keys()):
+    for port in natsorted(neighbor_dict['DEVICE_NEIGHBOR'].keys()):
         temp_port = port
         if get_interface_mode() == "alias":
             port = iface_alias_converter.name_to_alias(port)
-            neighbor_dict[port] = neighbor_dict.pop(temp_port)
-        device2interface_dict[neighbor_dict[port]['name']] = {'localPort': port, 'neighborPort': neighbor_dict[port]['port']}
+            neighbor_dict['DEVICE_NEIGHBOR'][port] = neighbor_dict['DEVICE_NEIGHBOR'].pop(temp_port)
+        device2interface_dict[neighbor_dict['DEVICE_NEIGHBOR'][port]['name']] = {'localPort': port, 'neighborPort': neighbor_dict['DEVICE_NEIGHBOR'][port]['port']}
 
     header = ['LocalPort', 'Neighbor', 'NeighborPort', 'NeighborLoopback', 'NeighborMgmt', 'NeighborType']
     body = []
     if interfacename:
-        for device in natsorted(neighbor_metadata_dict.keys()):
+        for device in natsorted(neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'].keys()):
             if device2interface_dict[device]['localPort'] == interfacename:
                 body.append([device2interface_dict[device]['localPort'],
                              device,
                              device2interface_dict[device]['neighborPort'],
-                             neighbor_metadata_dict[device]['lo_addr'],
-                             neighbor_metadata_dict[device]['mgmt_addr'],
-                             neighbor_metadata_dict[device]['type']])
+                             neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'][device]['lo_addr'],
+                             neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'][device]['mgmt_addr'],
+                             neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'][device]['type']])
     else:
-        for device in natsorted(neighbor_metadata_dict.keys()):
+        for device in natsorted(neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'].keys()):
             body.append([device2interface_dict[device]['localPort'],
                          device,
                          device2interface_dict[device]['neighborPort'],
-                         neighbor_metadata_dict[device]['lo_addr'],
-                         neighbor_metadata_dict[device]['mgmt_addr'],
-                         neighbor_metadata_dict[device]['type']])
+                         neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'][device]['lo_addr'],
+                         neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'][device]['mgmt_addr'],
+                         neighbor_metadata_dict['DEVICE_NEIGHBOR_METADATA'][device]['type']])
 
     click.echo(tabulate(body, header))