Add regex for syslog timestamp in extract_log

[kellyyeh]

Description of PR

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?

Warm-reboot test is failing at extracting timestamp from syslog

How did you do it?

Add regex for this timestamp format: 2023-02-28T15:42:27.355561+00:00

How did you verify/test it?

Warm reboot test originally failed at preboot when parsing through syslog. Adding the regex fixed the failure.
Ran convert_date with all three formats of syslog timestamp logs

Any platform specific information?

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

Documentation

[wangxin]

The pre-commit check detected issues in the files touched by this pull request.
The detected issues may be old or new. For new issues, please try to fix them.

For old issues, it is not mandatory to fix them because they were not caused by this change. It is unfair to blame
author of this pull request. But if you can take extra effort to fix the old issues as well, that would be great!

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

ansible/library/extract_log.py:76:1: E402 module level import not at top of file
ansible/library/extract_log.py:77:1: E402 module level import not at top of file
ansible/library/extract_log.py:78:1: E402 module level import not at top of file
ansible/library/extract_log.py:79:1: E402 module level import not at top of file
ansible/library/extract_log.py:80:1: E402 module level import not at top of file
ansible/library/extract_log.py:81:1: E402 module level import not at top of file
ansible/library/extract_log.py:82:1: E402 module level import not at top of file
ansible/library/extract_log.py:83:1: E402 module level import not at top of file
ansible/library/extract_log.py:84:1: E402 module level import not at top of file
ansible/library/extract_log.py:85:1: E402 module level import not at top of file
ansible/library/extract_log.py:86:1: F403 'from ansible.module_utils.basic import *' used; unable to detect undefined names
...
[truncated extra lines, please run pre-commit locally to view full check results]

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>

[vaibhavhd]

Minor: two places where line breaks are removed. Double line break is a pip8 suggested format.

[kellyyeh]

Updated

[vaibhavhd]

LGTM. Please mention how this change was tested.

[wangxin]

The pre-commit check detected issues in the files touched by this pull request.
The detected issues may be old or new. For new issues, please try to fix them.

For old issues, it is not mandatory to fix them because they were not caused by this change. It is unfair to blame
author of this pull request. But if you can take extra effort to fix the old issues as well, that would be great!

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

ansible/library/extract_log.py:76:1: E402 module level import not at top of file
ansible/library/extract_log.py:77:1: E402 module level import not at top of file
ansible/library/extract_log.py:78:1: E402 module level import not at top of file
ansible/library/extract_log.py:79:1: E402 module level import not at top of file
ansible/library/extract_log.py:80:1: E402 module level import not at top of file
ansible/library/extract_log.py:81:1: E402 module level import not at top of file
ansible/library/extract_log.py:82:1: E402 module level import not at top of file
ansible/library/extract_log.py:83:1: E402 module level import not at top of file
ansible/library/extract_log.py:84:1: E402 module level import not at top of file
ansible/library/extract_log.py:85:1: E402 module level import not at top of file
ansible/library/extract_log.py:86:1: F403 'from ansible.module_utils.basic import *' used; unable to detect undefined names
...
[truncated extra lines, please run pre-commit locally to view full check results]

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>

[kellyyeh]

LGTM. Please mention how this change was tested.

Updated testing

[mssonicbld]

Cherry-pick PR to 202205: #8675

[mssonicbld]

Cherry-pick PR to 202012: #8676