Various fixes from monitoring of 2.0.51-alpha

[ryanwitt]

Closes https://github.com/suredone/suredone/issues/10912

• Adds validation for prefix/suffixes
• Fixes bug where .fifo queues were not monitored correctly
• Removes the --unpair option from idle-queues
• Makes idle-queues --delete remove orphaned failed and dead queues that are idle
• Add retries for flaky tests
• Add test coverage
• Calculate load feedback more quickly
• Attempt to fix potential qrlCache bug
• Fix a bug where too many jobs would get added to the waiting state

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 76.82%. Comparing base (4e51985) to head (d385ec3).
Report is 11 commits behind head on v2.

Files with missing lines	Patch %	Lines
src/monitor.js	0.00%	1 Missing and 1 partial ⚠️
src/qrlCache.js	50.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##               v2      #67      +/-   ##
==========================================
+ Coverage   69.67%   76.82%   +7.14%     
==========================================
  Files          12       12              
  Lines        1141     1139       -2     
  Branches      277      274       -3     
==========================================
+ Hits          795      875      +80     
+ Misses        266      203      -63     
+ Partials       80       61      -19     

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