Modify the PyROS Logging System

[shermanjasonaf]

Summary/Motivation:

This PR modifies the PyROS solver output logging system so that the output shown by the default logger (or any other INFO-level logger) is simplified.

Changes proposed in this PR:

• Log the following at DEBUG, rather than INFO level: (i) full PyROS solver config, (ii) backup solver invocations, (iii) subproblem solve failures for the master feasibility and DR polishing problems, (iv) timing profile, (v) component statistics for the preprocessed model
• Add indication of backup solver invocation to the (INFO-level) iteration log table
• Log component statistics for the un-preprocessed model at INFO level
• Update tests and documentation according to the new changes

TODO

• (After Bugfix: ConfigDict.user_values() should return only child entries, not instance itself #3722 merged) Simplify logging of user options
• Add results for successfully solved individual separation problems to DEBUG-level logs

Legal Acknowledgement

By contributing to this software project, I have read the contribution guide and agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the BSD license.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[shermanjasonaf]

@jas-yao @natalieisenberg @jsiirola

[codecov]

Codecov Report

❌ Patch coverage is 96.63866% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 89.18%. Comparing base (740750d) to head (20c2e0b).

Files with missing lines	Patch %	Lines
pyomo/contrib/pyros/separation_problem_methods.py	88.88%	2 Missing ⚠️
pyomo/contrib/pyros/master_problem_methods.py	66.66%	1 Missing ⚠️
pyomo/contrib/pyros/pyros.py	96.15%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3732   +/-   ##
=======================================
  Coverage   89.18%   89.18%           
=======================================
  Files         896      896           
  Lines      103725   103800   +75     
=======================================
+ Hits        92508    92575   +67     
- Misses      11217    11225    +8     

Flag	Coverage Δ
builders	29.09% <13.44%> (+<0.01%)	⬆️
default	85.77% <95.79%> (?)
expensive	35.70% <13.44%> (?)
linux	86.99% <96.63%> (-1.94%)	⬇️
linux_other	86.99% <96.63%> (+<0.01%)	⬆️
osx	83.14% <95.79%> (+0.01%)	⬆️
win	85.24% <96.63%> (+<0.01%)	⬆️
win_other	85.24% <96.63%> (+<0.01%)	⬆️

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[jsiirola]

@shermanjasonaf There is still a TODO on this PR (it was waiting for #3722). That PR is in - do you want to incorporate it into a subsequent PR (in which case this PR is ready to merge) or address that TODO as part of this PR (in which case we will wait)?

[shermanjasonaf]

@jsiirola I have addressed the TODO here.