[chassis][pytest fails] test_snmp_mgmt_interface failed with KeyError

[ysmanman]

Topology: t2
Failure: KeyError: 'snmp_interfaces'

File "/usr/local/lib/python2.7/dist-packages/_pytest/python.py", line 1464, in runtest
self.ihook.pytest_pyfunc_call(pyfuncitem=self)
File "/usr/local/lib/python2.7/dist-packages/pluggy/hooks.py", line 286, in call
return self._hookexec(self, self.get_hookimpls(), kwargs)
File "/usr/local/lib/python2.7/dist-packages/pluggy/manager.py", line 93, in _hookexec
return self._inner_hookexec(hook, methods, kwargs)
File "/usr/local/lib/python2.7/dist-packages/pluggy/manager.py", line 87, in
firstresult=hook.spec.opts.get("firstresult") if hook.spec else False,
File "/usr/local/lib/python2.7/dist-packages/pluggy/callers.py", line 208, in _multicall
return outcome.get_result()
File "/usr/local/lib/python2.7/dist-packages/pluggy/callers.py", line 81, in get_result
_reraise(*ex) # noqa
File "/usr/local/lib/python2.7/dist-packages/pluggy/callers.py", line 187, in _multicall
res = hook_impl.function(*args)
File "/usr/local/lib/python2.7/dist-packages/_pytest/python.py", line 174, in pytest_pyfunc_call
testfunction(**testargs)
File "/data/tests/snmp/test_snmp_interfaces.py", line 201, in test_snmp_interfaces_mibs
ports_snmps = verify_port_snmp(dut_facts, snmp_facts)
File "/data/tests/snmp/test_snmp_interfaces.py", line 73, in verify_port_snmp
snmp_port_map = { snmp_facts['snmp_interfaces'][idx]['name'] : idx for idx in snmp_facts['snmp_interfaces'] }
KeyError: 'snmp_interfaces'

12/02/2022 21:57:31 init._log_sep_line L0159 INFO | ==================== snmp/test_snmp_interfaces.py::test_snmp_interfaces_mibs[cmp210-None] teardown ====================

Description

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**Output of `show version`:**

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**Attach debug file `sudo generate_dump`:**

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[sanmalho-git]

FYI - this might be because of sonic-net/sonic-snmpagent#242

[abdosi]

cc @SuvarnaMeenakshi