Description

Steps to reproduce the issue:

1. Use latest image in the build of submodule sonic-utilities
2. Run subnet decap test in KVM t0

Describe the results you received:

Config reload failed with syslog:
2024 Dec 8 07:09:43.939692 vlab-01 ERR config_validator.py: Tables without yang models: {'SUBNET_DECAP': {'subnet_type': {'src_ip': '20.20.20.0/24', 'src_ip_v6': 'fc01::/120', 'status': 'enable'}}}
2024 Dec 8 07:09:43.954088 vlab-01 ERR db_migrator: Caught exception: Yang validation failed

Describe the results you expected:

No error

Output of show version:

(paste your output here)

Output of show techsupport:

(paste your output here or download and attach the file here )

Additional information you deem important (e.g. issue happens only occasionally):