RecircPort not present in SNMP interfaces for Voq chassis

[SuvarnaMeenakshi]

Description

Steps to reproduce the issue:

1. Run test_snmp_interfaces.py test on Arista Voq chassis or Linecard

Describe the results you received:

FAILED snmp/test_snmp_interfaces.py::test_snmp_interfaces[str2-7804-lc7-1-None] - AttributeError: 'module' object has no attribute 'locals'
FAILED snmp/test_snmp_interfaces.py::test_snmp_interfaces_mibs[str2-7804-lc7-1-None] - KeyError: u'Recirc0/0'

Describe the results you expected:

Should not see any failure.

SNMP test case compares the list of interfaces in config_db to that of the result from SNMP query.
In this case, the snmp interface does not contain the Recirc port, it contains Ethernet interfaces/port channels and Inband interfaces, which was added using the below PRs:
sonic-net/sonic-snmpagent#228
sonic-net/sonic-py-swsssdk#113
If recirc port is not required in SNMP interface MIB result, then the test case should be modified to ignore this interface.

Output of show version:

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Output of show techsupport:

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

[SuvarnaMeenakshi]

Fixed with this PR sonic-net/sonic-snmpagent#244