ironware.rb: Fix "current speed" regex to enclude MED-HI speed

[michaelpsomiadis]

Pre-Request Checklist

• Passes rubocop code analysis (try rubocop --auto-correct)
• Tests added or adapted (try rake test)
• Changes are reflected in the documentation
• User-visible changes appended to CHANGELOG.md

Description

The following line output by show chassis was not accounting for all cases, which meant configuration would be updated based on fan speed.

-! --- TEMPERATURE are in auto mode (current speed is MED-HI (90%)). Temperature monitoring poll period is 60 seconds.

Added '-' character to regex to resolve issue.

[codecov-commenter]

Codecov Report

Merging #2155 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2155   +/-   ##
=======================================
  Coverage   63.32%   63.32%           
=======================================
  Files          30       30           
  Lines        1497     1497           
=======================================
  Hits          948      948           
  Misses        549      549           

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[wk]

Thanks! Pulling this in.