[syslog] Adjust runningconfiguration syslog command

[fastiuk]

What I did

Adjust show runningconfiguration syslog command according to the new syslog configuration file

How I did it

Fix regex to match the target syslog server

How to verify it

Run the next command in sonic shell:

show runningconfiguration syslog

Previous command output (if the output of a command-line utility has changed)

N/A

New command output (if the output of a command-line utility has changed)

N/A

During the time that after this utilities PR merge, before buildimage PR merge, it will break "show run syslog" right?

[fastiuk]

@wen587 yes, it will

[dgsudharsan]

@wen587 yes, it will

We need to do submodule update in the sonic-buildimage PR of rsyslog to avoid any break

[fastiuk]

Rebased to master due to conflicts.
@wen587 / @dgsudharsan please reapprove

[fastiuk]

@wen587 yes, it will

We need to do submodule update in the sonic-buildimage PR of rsyslog to avoid any break

added

[StormLiangMS]

This PR will cause PR test failure, revert from 202305. @fastiuk pls fix and have separate PR to 202305

==================================== ERRORS ====================================
______________ ERROR at teardown of test_syslog_server_tc1_suite _______________

duthosts = [], rand_one_dut_hostname = 'vlab-01'
original_syslog_servers = ['10.0.0.5', '10.0.0.6']

@pytest.fixture(autouse=True)
def setup_env(duthosts, rand_one_dut_hostname, original_syslog_servers):
    """
    Setup/teardown fixture for syslog config
    Args:
        duthosts: list of DUTs.
        rand_selected_dut: The fixture returns a randomly selected DuT.
        original_syslog_servers: original syslog servers stored in config
    """
    duthost = duthosts[rand_one_dut_hostname]
    create_checkpoint(duthost)

    yield

    try:
        logger.info("Rolled back to original checkpoint")
        rollback_or_reload(duthost)

        current_syslog_servers = get_current_syslog_servers(duthost)

      pytest_assert(

            set(current_syslog_servers) == set(original_syslog_servers),
            "Syslog servers are not rollback_or_reload to initial config setup"
        )

E Failed: Syslog servers are not rollback_or_reload to initial config setup