Reschedule changed devices

[johannaengland]

Scope and purpose

Fixes #330.

Makes load_polldevs detect changed devices and then deletes scheduled jobs for these and adds new jobs with the new configuration values.

Contributor Checklist

Every pull request should have this checklist filled out, no matter how small it is.
More information about contributing to Zino can be found in the
README.

• Added a changelog fragment for towncrier
• Added/amended tests for new/changed code
• Added/changed documentation
• Linted/formatted the code with black, ruff and isort, easiest by using pre-commit
• The first line of the commit message continues the sentence "If applied, this commit will ...", starts with a capital letter, does not end with punctuation and is 50 characters or less long. See https://cbea.ms/git-commit/
• If applicable: Created new issues if this PR does not fix the issue completely/there is further work to be done

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.20%. Comparing base (41a87dc) to head (0164d26).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #333   +/-   ##
=======================================
  Coverage   98.19%   98.20%           
=======================================
  Files          64       64           
  Lines        7922     7926    +4     
=======================================
+ Hits         7779     7783    +4     
  Misses        143      143           

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[runborg]

Technically this does fix the issue with rescheduling devices and works as intended. so that is a +1 from me.
As for the question about the information logged someone else needs to take a decision on that part

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud