Remove signal handler and improve PubSub::listem_message()

[liuh-80]

No description provided.

[liuh-80]

Code change in this PR will be test by sonic-net/sonic-buildimage#11100 to makesure existed code not break.

[liuh-80]

/azp run

[azure-pipelines]

Pull request contains merge conflicts.

[liuh-80]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[liuh-80]

Following UT failed after remove the retry inside pubsub, need investigation failed reason and fix:
2022-06-14T07:24:18.1567596Z test_sflow.py::TestSflow::test_defaultGlobal FAILED [ 78%]
2022-06-14T07:24:59.2537746Z test_sflow.py::TestSflow::test_globalAll FAILED [ 78%]
2022-06-14T07:25:40.4894964Z test_sflow.py::TestSflow::test_InterfaceSet FAILED [ 78%]
2022-06-14T07:26:21.6047747Z test_sflow.py::TestSflow::test_defaultRate FAILED [ 78%]
2022-06-14T07:27:02.6082874Z test_sflow.py::TestSflow::test_ConfigDel FAILED [ 78%]
2022-06-14T07:27:43.8002363Z test_sflow.py::TestSflow::test_SamplingRatePortCfgUpdate FAILED [ 79%]
2022-06-14T07:28:24.8800435Z test_sflow.py::TestSflow::test_SamplingRateManualUpdate FAILED [ 79%]
2022-06-14T07:29:06.0175690Z test_sflow.py::TestSflow::test_InterfaceDisableAllUpdate FAILED [ 79%]
2022-06-14T07:29:47.0739828Z test_sflow.py::TestSflow::test_InterfaceDefaultSampleRate FAILED [ 79%]
2022-06-14T07:30:28.8044684Z test_sflow.py::TestSflow::test_Teardown FAILED [ 79%]

Fixed.

[liuh-80]

/azp run

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Azure Pipelines successfully started running 1 pipeline(s).

[liuh-80]

Build SAI failed because following error:

2022-06-15T09:19:32.5006579Z tests: tests.cpp:843: void test_watchdog_timer_clock_rollback(): Assertion `settimeofday(&currentTime, NULL) == 0' failed.
2022-06-15T09:19:33.0057529Z /bin/bash: line 5: 13008 Aborted (core dumped) ${dir}$tst

Seems not caused by code change, some other PR also failed with same reason:
https://dev.azure.com/mssonic/build/_build/results?buildId=110343&view=logs&j=61b7eb0d-78fa-5af5-6df0-b6f82d3891a8&t=6a34388b-e109-5be6-7b42-af0762c91bba

[liuh-80]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[liuh-80]

The code chaneg in this PR seems dupe with https://github.com/Azure/sonic-swss-common/pull/624/files

So will discussion with stepanblyschak and merge code to his PR.