Add fabric port monitoring toggle check

[jfeng-arista]

What I did
Add fabric port monitoring toggle check.
The command is added at sonic-net/sonic-utilities#2932. This is the orchagent handling part.

Why I did it

How I verified it

Details if related

[jfeng-arista]

the failures look like not related to this change, I am starting again

[jfeng-arista]

/azpw run Azure.sonic-swss

[mssonicbld]

/AzurePipelines run Azure.sonic-swss

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[jfeng-arista]

test_chassis_system_lag_id_allocator_table_full failed (1 runs remaining out of 2).
<class 'AssertionError'>
LAG ID allocator table full error is not returned
assert '0' == '1'

not related to thsi change

[jfeng-arista]

/azpw run Azure.sonic-swss

[mssonicbld]

/AzurePipelines run Azure.sonic-swss

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[jfeng-arista]

test_chassis_system_lag_id_allocator_table_full failed (1 runs remaining out of 2).
<class 'AssertionError'>
LAG ID allocator table full error is not returned
assert '0' == '1'

not related to this chagne

[jfeng-arista]

the failure not related to this change, it is synced down .

[jfeng-arista]

/azpw run Azure.sonic-swss

[mssonicbld]

/AzurePipelines run Azure.sonic-swss

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[arlakshm]

/Azp run Azure.sonic-swss

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[jfeng-arista]

test failures are from upstream, not related to this change