Fix priority calculation for local queue

[masokol]

Closes #546

[codecov-commenter]

Codecov Report

Merging #547 (91e1d82) into ecchronos-1.0 (43b9a39) will decrease coverage by 0.10%.
The diff coverage is 66.66%.

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@@                 Coverage Diff                 @@
##             ecchronos-1.0     #547      +/-   ##
===================================================
- Coverage            77.42%   77.32%   -0.10%     
- Complexity             565      567       +2     
===================================================
  Files                   71       71              
  Lines                 2423     2426       +3     
  Branches               248      248              
===================================================
  Hits                  1876     1876              
- Misses                 473      476       +3     
  Partials                74       74              

Files Changed	Coverage Δ
...dra/ecchronos/core/repair/RepairSchedulerImpl.java	92.13% <ø> (-0.09%)	⬇️
...assandra/ecchronos/core/repair/TableRepairJob.java	82.45% <57.14%> (-1.48%)	⬇️
...sandra/ecchronos/core/scheduling/ScheduledJob.java	97.87% <100.00%> (+0.04%)	⬆️
...a/ecchronos/core/scheduling/ScheduledJobQueue.java	89.18% <100.00%> (+0.30%)	⬆️

... and 1 file with indirect coverage changes

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