Restrict Mirror minimum polling period to 60 seconds

[marcosbento]

Re ECFLOW-1995

Description

Restrict Mirror minimum polling period to 60 seconds

Contributor Declaration

By opening this pull request, I affirm the following:

• All authors agree to the Contributor License Agreement.
• The code follows the project's coding standards.
• I have performed self-review and added comments where needed.
• I have added or updated tests to verify that my changes are effective and functional.
• I have run all existing tests and confirmed they pass.

🌦️ >> Documentation << 🌦️
https://sites.ecmwf.int/docs/dev-section/ecflow/pull-requests/PR-244

[codecov-commenter]

Codecov Report

❌ Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 48.67%. Comparing base (905a098) to head (8129550).
⚠️ Report is 2 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ervice/src/ecflow/service/mirror/MirrorService.cpp	75.00%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #244      +/-   ##
===========================================
- Coverage    48.70%   48.67%   -0.04%     
===========================================
  Files         1221     1221              
  Lines        96120    96125       +5     
  Branches     14833    14833              
===========================================
- Hits         46818    46786      -32     
- Misses       49302    49339      +37     

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