Fix the shared memory cleaning script.

[shumov-ag]

Description

Fix the regular expression that leads to skipping the processing of shared lock files by fastdds shm clean command.

To reproduce the problem you can use next script:

Python 3.8.10 (default, Jun 22 2022, 20:18:18) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> port_lock_re = re.compile('^fastrtps_port\\d{,5}_el|_sl')
>>> bool(port_lock_re.match('fastrtps_port7777_el'))
True
>>> bool(port_lock_re.match('fastrtps_port7777_sl'))
False      <----------------------------------------------------- here is a problem
>>> 

After this fix, the behavior will be as follow:

Python 3.8.10 (default, Jun 22 2022, 20:18:18) 
[GCC 9.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> port_lock_re = re.compile('^fastrtps_port\\d{,5}(_el|_sl)')
>>> bool(port_lock_re.match('fastrtps_port7777_el'))
True
>>> bool(port_lock_re.match('fastrtps_port7777_sl'))
True
>>> 

@Mergifyio backport 2.12.x 2.10.x 2.6.x

Contributor Checklist

• Commit messages follow the project guidelines.
• The code follows the style guidelines of this project.
• N/A: Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
• N/A: Any new/modified methods have been properly documented using Doxygen.
• Changes are ABI compatible.
• Changes are API compatible.
• N/A: New feature has been added to the versions.md file (if applicable).
• N/A: New feature has been documented/Current behavior is correctly described in the documentation.
• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.

[JesusPoderoso]

@richiprosima please test this

[EduPonz]

@Mergifyio backport 2.12.x 2.10.x 2.6.x

[mergify]

backport 2.12.x 2.10.x 2.6.x

🟠 Waiting for conditions to match

• merged [📌 backport requirement]

[JesusPoderoso]

Thanks for your contribution @shumov-ag!
Going in.

[JesusPoderoso]

@Mergifyio backport 2.12.x 2.10.x 2.6.x

[mergify]

backport 2.12.x 2.10.x 2.6.x

✅ Backports have been created

• #4424 Fix the shared memory cleaning script. (backport #4369) has been created for branch 2.12.x
• #4425 Fix the shared memory cleaning script. (backport #4369) has been created for branch 2.10.x
• #4426 Fix the shared memory cleaning script. (backport #4369) has been created for branch 2.6.x