read portchannel name from LAG_NAME_MAP_TABLE in COUNTERS_DB

[anilkpandey]

A new COUNTERS_LAG_NAME_MAP table has been added in COUNTERS_DB to keep the portchannel OID to name mapping. This change is to read the portchannel name from this table to display in 'show mac' command when a mac is learnt on a portchannel.

[prsunny]

Awaiting on the merge of this PR - sonic-net/sonic-buildimage#3770

[dzhangalibaba]

THis change cause build failure on master branch, please double check. @prsunny @stcheng @anilkpandey

I got below error when using latest py-swsssdk submodule , when I move back one commit, then It passed.

tests/test_nexthop.py:44: AssertionError
----------------------------- Captured stdout call -----------------------------
{'trailing_bytes': b'', 'values': [ValueRepresentation(type=<ValueType.NO_SUCH_INSTANCE: 129>, reserved=0, name=ObjectIdentifier(n_subid=14, prefix_=0, include=1, reserved=0, subids=(1, 3, 6, 1, 2, 1, 4, 21, 1, 7, 0, 0, 0, 0)), data=None)], 'error': <Errors.NO_AGENT_X_ERROR: 0>, 'index': 0, 'sys_up_time': 0, 'header': PDUHeader(version=1, type_=<PduTypes.RESPONSE: 18>, flags=16, reserved=0, session_id=42, transaction_id=0, packet_id=0, payload_length=72)}
================ 13 failed, 45 passed, 80 error in 4.68 seconds ================
[ FAIL LOG END ] [ target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl ]
slave.mk:444: recipe for target 'target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl' failed
make: *** [target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl] Error 1
Makefile.work:193: recipe for target 'target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl' failed
make[1]: *** [target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl] Error 2
make[1]: Leaving directory '/home/dzhang/MS_DB/sonic-buildimage'
Makefile:6: recipe for target 'target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl' failed
make: *** [target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl] Error 2

[anilkpandey]

THis change cause build failure on master branch, please double check. @prsunny @stcheng @anilkpandey

I got below error when using latest py-swsssdk submodule , when I move back one commit, then It passed.

tests/test_nexthop.py:44: AssertionError
----------------------------- Captured stdout call -----------------------------
{'trailing_bytes': b'', 'values': [ValueRepresentation(type=<ValueType.NO_SUCH_INSTANCE: 129>, reserved=0, name=ObjectIdentifier(n_subid=14, prefix_=0, include=1, reserved=0, subids=(1, 3, 6, 1, 2, 1, 4, 21, 1, 7, 0, 0, 0, 0)), data=None)], 'error': <Errors.NO_AGENT_X_ERROR: 0>, 'index': 0, 'sys_up_time': 0, 'header': PDUHeader(version=1, type_=<PduTypes.RESPONSE: 18>, flags=16, reserved=0, session_id=42, transaction_id=0, packet_id=0, payload_length=72)}
================ 13 failed, 45 passed, 80 error in 4.68 seconds ================
[ FAIL LOG END ] [ target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl ]
slave.mk:444: recipe for target 'target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl' failed
make: *** [target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl] Error 1
Makefile.work:193: recipe for target 'target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl' failed
make[1]: *** [target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl] Error 2
make[1]: Leaving directory '/home/dzhang/MS_DB/sonic-buildimage'
Makefile:6: recipe for target 'target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl' failed
make: *** [target/python-wheels/asyncsnmp-2.1.0-py3-none-any.whl] Error 2

The following PR needs to be merged as well
sonic-net/sonic-snmpagent#114

[jleveque]

TODO: This PR needs to be cherry-picked into the 201911 branch after sonic-net/sonic-swss#1124 is merged and cherry-picked.

[jleveque]

This PR was subsequently reverted. However, sonic-net/sonic-swss#1124 has been merged to master. Thus, this PR should be able to be un-reverted from master and also cherry-picked into 201911.