[yang-models] VLAN yang model is not up-to-date

[ghooo]

Description

After building a KVM and removing the file /usr/local/yang-models/sonic-bgp-neighbor.yang, and validating config using yang-mgmt and we get an error:

sonic_yang(3):All Keys are not parsed in VLAN
dict_keys(['Vlan1000'])
sonic_yang(3):exceptionList:["'dhcpv6_servers'"]
sonic_yang(3):Data Loading Failed:All Keys are not parsed in VLAN
dict_keys(['Vlan1000'])

Steps to reproduce the issue:

1. Build up a KVM env
2. run: sudo rm /usr/local/yang-models/sonic-bgp-neighbor.yang
3. Run the following code snippet in python3

import subprocess
import sonic_yang
import json
def get_config_db_json():
    cmd = "show runningconfiguration all"
    result = subprocess.Popen(cmd, shell=True, text=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    text, err = result.communicate()
    return json.loads(text)
configDbJson = get_config_db_json()
sy = sonic_yang.SonicYang("/usr/local/yang-models")
sy.loadYangModel()
sy.loadData(configDbJson )

Describe the results you received:

admin@vlab-01:~$ python3 test.py 
Note: Below table(s) have no YANG models:
BGP_NEIGHBOR, BGP_PEER_RANGE, BUFFER_PG, BUFFER_POOL, BUFFER_PROFILE, BUFFER_QUEUE, CABLE_LENGTH, CONSOLE_SWITCH, DEVICE_METADATA, DEVICE_NEIGHBOR_METADATA, DHCP_RELAY, DHCP_SERVER, DSCP_TO_TC_MAP, FEATURE, KDUMP, MAP_PFC_PRIORITY_TO_QUEUE, PORT_QOS_MAP, QUEUE, RESTAPI, SCHEDULER, SNMP, SNMP_COMMUNITY, SYSLOG_SERVER, TC_TO_PRIORITY_GROUP_MAP, TC_TO_QUEUE_MAP, TELEMETRY, WRED_PROFILE, 
sonic_yang(3):All Keys are not parsed in VLAN
dict_keys(['Vlan1000'])
sonic_yang(3):exceptionList:["'dhcpv6_servers'"]
sonic_yang(3):Data Loading Failed:All Keys are not parsed in VLAN
dict_keys(['Vlan1000'])
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/sonic_yang_ext.py", line 716, in loadData
    self._xlateConfigDB(xlateFile=xlateFile)
  File "/usr/local/lib/python3.7/dist-packages/sonic_yang_ext.py", line 432, in _xlateConfigDB
    self._xlateConfigDBtoYang(jIn, yangJ)
  File "/usr/local/lib/python3.7/dist-packages/sonic_yang_ext.py", line 420, in _xlateConfigDBtoYang
    jIn[table], table)
  File "/usr/local/lib/python3.7/dist-packages/sonic_yang_ext.py", line 400, in _xlateContainer
    configC.keys())))
Exception: All Keys are not parsed in VLAN
dict_keys(['Vlan1000'])

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "test.py", line 12, in <module>
    sy.loadData(configDbJson )
  File "/usr/local/lib/python3.7/dist-packages/sonic_yang_ext.py", line 726, in loadData
    raise SonicYangException("Data Loading Failed\n{}".format(str(e)))
sonic_yang_ext.SonicYangException: Data Loading Failed
All Keys are not parsed in VLAN
dict_keys(['Vlan1000'])```

Describe the results you expected:

Successfully loading configDb into sonic_yang

Output of show version:

admin@vlab-01:~$ show version

SONiC Software Version: SONiC.master.37690-1a2e85248
Distribution: Debian 10.10
Kernel: 4.19.0-12-2-amd64
Build commit: 1a2e85248
Build date: Fri Sep 17 14:17:43 UTC 2021
Built by: AzDevOps@sonic-build-workers-000PC0

Platform: x86_64-kvm_x86_64-r0
HwSKU: Force10-S6000
ASIC: vs
ASIC Count: 1
Serial Number: N/A
Model Number: N/A
Hardware Revision: N/A
Uptime: 20:13:46 up 13 days, 23:47,  1 user,  load average: 1.11, 0.61, 0.41

Docker images:
REPOSITORY                    TAG                      IMAGE ID            SIZE
docker-platform-monitor       latest                   521ca112ce1b        630MB
docker-platform-monitor       master.37690-1a2e85248   521ca112ce1b        630MB
docker-sonic-mgmt-framework   latest                   007c6afa0bef        570MB
docker-sonic-mgmt-framework   master.37690-1a2e85248   007c6afa0bef        570MB
docker-snmp                   latest                   d919e712bdd7        455MB
docker-snmp                   master.37690-1a2e85248   d919e712bdd7        455MB
docker-sonic-telemetry        latest                   88af4994a44d        502MB
docker-sonic-telemetry        master.37690-1a2e85248   88af4994a44d        502MB
docker-dhcp-relay             latest                   a22ce5135236        420MB
docker-lldp                   latest                   942d89861049        453MB
docker-lldp                   master.37690-1a2e85248   942d89861049        453MB
docker-fpm-frr                latest                   6f30a087f8f0        443MB
docker-fpm-frr                master.37690-1a2e85248   6f30a087f8f0        443MB
docker-database               latest                   d7fc3d3a7350        413MB
docker-database               master.37690-1a2e85248   d7fc3d3a7350        413MB
docker-macsec                 latest                   2bcd6845512d        428MB
docker-macsec                 master.37690-1a2e85248   2bcd6845512d        428MB
docker-gbsyncd-vs             latest                   e54caa969796        421MB
docker-gbsyncd-vs             master.37690-1a2e85248   e54caa969796        421MB
docker-sflow                  latest                   05f50df84c33        426MB
docker-sflow                  master.37690-1a2e85248   05f50df84c33        426MB
docker-syncd-vs               latest                   6d9154f74abd        421MB
docker-syncd-vs               master.37690-1a2e85248   6d9154f74abd        421MB
docker-orchagent              latest                   726cd536a28c        443MB
docker-orchagent              master.37690-1a2e85248   726cd536a28c        443MB
docker-nat                    latest                   0501248b66d1        428MB
docker-nat                    master.37690-1a2e85248   0501248b66d1        428MB
docker-router-advertiser      latest                   8023aa0c2925        413MB
docker-router-advertiser      master.37690-1a2e85248   8023aa0c2925        413MB
docker-teamd                  latest                   c863719dc61a        425MB
docker-teamd                  master.37690-1a2e85248   c863719dc61a        425MB```

[ghooo]

@praveen-li

[zhangyanzhao]

@AkhileshSamineni please help to handle this issue when working on 8946. Thanks.

[qiluo-msft]

@ghooo Please verify this issue is closed by linked pull request.