Improve pylint score

[cglewis]

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[codecov]

Codecov Report

Merging #3891 (5832f05) into master (1cc3ca5) will increase coverage by 0.00%.
The diff coverage is 86.21%.

@@           Coverage Diff           @@
##           master    #3891   +/-   ##
=======================================
  Coverage   92.48%   92.49%           
=======================================
  Files          47       47           
  Lines        8872     8877    +5     
=======================================
+ Hits         8205     8210    +5     
  Misses        667      667           

Impacted Files	Coverage Δ
faucet/faucet_event.py	60.47% <0.00%> (ø)
faucet/config_parser_util.py	91.45% <66.67%> (ø)
faucet/faucet.py	74.59% <66.67%> (ø)
faucet/fctl.py	83.93% <66.67%> (ø)
faucet/__main__.py	83.87% <100.00%> (ø)
faucet/acl.py	93.87% <100.00%> (ø)
faucet/conf.py	97.97% <100.00%> (ø)
faucet/config_parser.py	94.74% <100.00%> (ø)
faucet/gauge.py	82.93% <100.00%> (+0.28%)	⬆️
faucet/port.py	96.01% <100.00%> (+0.03%)	⬆️
... and 1 more

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