[Test] Include non-numeric text in test_problems comparisons

[speth]

• There is a clear use-case for this code change
• The commit message has a short title & references relevant issues
• Build passes (scons build & scons test) and unit tests address code coverage

Changes proposed in this pull request
The comparison code for the output of "test_problems" tests had an error in its logic where lines where all of the numerical values were nearly identical would get counted as equal, even if other text on those lines was not the same. This even applied to lines with no numerical values.

[codecov]

Codecov Report

Merging #785 into master will increase coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #785      +/-   ##
==========================================
+ Coverage   71.41%   71.45%   +0.03%     
==========================================
  Files         372      372              
  Lines       43904    43962      +58     
==========================================
+ Hits        31355    31414      +59     
+ Misses      12549    12548       -1

Impacted Files	Coverage Δ
test/kinetics/kineticsFromYaml.cpp	97.64% <0%> (-2.36%)	⬇️
src/thermo/HMWSoln.cpp	71.58% <0%> (+0.04%)	⬆️
src/kinetics/KineticsFactory.cpp	95.32% <0%> (+0.8%)	⬆️
src/base/AnyMap.cpp	87.44% <0%> (+1.01%)	⬆️

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[ischoegl]

Looks good to me.