[17558] Handle SIGTERM in fast-discovery-server

[Mario-DL]

Description

This is a little PR that adds a handling for SIGTERM signal, usually useful in bash scripting contexts using kill

@Mergifyio backport 2.9.x 2.8.x 2.6.x 2.1.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.
• Check contributor checklist is correct.
• Check CI results: changes do not issue any warning.
• Check CI results: failing tests are unrelated with the changes.

[EduPonz]

@richiprosima please test windows

[EduPonz]

@richiprosima please test windows

[EduPonz]

@Mergifyio backport 2.9.x 2.8.x 2.6.x 2.1.x

[mergify]

backport 2.9.x 2.8.x 2.6.x 2.1.x

✅ Backports have been created

• #3378 [17558] Handle SIGTERM in fast-discovery-server (backport #3364) has been created for branch 2.9.x
• #3379 [17558] Handle SIGTERM in fast-discovery-server (backport #3364) has been created for branch 2.8.x
• #3380 [17558] Handle SIGTERM in fast-discovery-server (backport #3364) has been created for branch 2.6.x
• #3381 [17558] Handle SIGTERM in fast-discovery-server (backport #3364) has been created for branch 2.1.x