[test gap] Add a new case to check caclmgrd syslog

[ZhaohuiS]

Description of PR

Summary:
Fixes # (issue)
To address #16548.
The issue sonic-net/sonic-buildimage#21290, the issue of INFO level logs disappear in caclmgrd was reported after the commit got merged months later.
We need a test case to help us report this kind of issue earlier.

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• New Test case
  • Skipped for non-supported platforms
• Test case improvement

Back port request

• 202012
• 202205
• 202305
• 202311
• 202405
• 202411

Approach

What is the motivation for this PR?

A new test case to check if INFO logs of caclmgrd was printed into syslog successfully.

How did you do it?

1. rotate syslog
2. restart caclmgrd
3. check if iptables syslog existing in syslog file
4. Check if iptables rules are applied successfully in the output of systemctl status caclmgrd

How did you verify/test it?

Run the new test case on the testbed

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[mssonicbld]

/azp run

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[mssonicbld]

/azp run

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