[Fix] Fix multi-asic flaky lldp not ready issue

[yejianquan]

Description of PR

In the recover of sanity check, for config_reload, we simply sleep 120s.
In some topology, like multi-asic scenario, it's not enough.
lldp services get a big chance that not ready after 120s, then sanity failed.

Use config_reload with safe_reload to better handle this flaky issue.

Summary:
Fixes # (issue)

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 201911
• 202012
• 202205

Approach

What is the motivation for this PR?

Fix multi-asic lldp flaky issue.

How did you do it?

Use config_reload with safe_reload to better handle this flaky issue.

How did you verify/test it?

Any platform specific information?

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

Documentation

[mssonicbld]

The pre-commit check detected issues in the files touched by this pull request.
The pre-commit check is a mandatory check, please fix detected issues.

Detailed pre-commit check results:
trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check yaml...........................................(no files to check)Skipped
check for added large files..............................................Passed
check python ast.........................................................Passed
flake8...................................................................Failed
- hook id: flake8
- exit code: 1

tests/common/plugins/sanity_check/recover.py:8:1: F401 'tests.common.config_reload.config_force_option_supported' imported but unused
tests/common/reboot.py:195:82: E203 whitespace before ','

flake8...............................................(no files to check)Skipped
check conditional mark sort..........................(no files to check)Skipped

To run the pre-commit checks locally, you can follow below steps:

1. Ensure that default python is python3. In sonic-mgmt docker container, default python is python2. You can run
   the check by activating the python3 virtual environment in sonic-mgmt docker container or outside of sonic-mgmt
   docker container.
2. Ensure that the pre-commit package is installed:

sudo pip install pre-commit

3. Go to repository root folder
4. Install the pre-commit hooks:

pre-commit install

5. Use pre-commit to check staged file:

pre-commit

6. Alternatively, you can check committed files using:

pre-commit run --from-ref <commit_id> --to-ref <commit_id>

[yejianquan]

20/20 verification passed:

[wangxin]

LGTM

[mssonicbld]

@yejianquan PR conflicts with 202012 branch

[mssonicbld]

@yejianquan PR conflicts with 202205 branch

[mssonicbld]

Cherry-pick PR to 202305: #9476

[yejianquan]

@yejianquan PR conflicts with 202012 branch

#9479

[yejianquan]

@yejianquan PR conflicts with 202205 branch

#9478