(WIN-6) trim whitespace from test_tiers before parsing

[ThoughtCrhyme]

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[eputnam]

this is pretty nitpicky, but is to_s required here? i'm genuinely curious as i'm often missing something.

[5] pry(main)> aryy = ENV['TEST'].split(',')
=> ["testing", "testing2", "testing3"]
[6] pry(main)> aryy.each do |i|
[6] pry(main)*   puts i.class
[6] pry(main)* end
String
String
String
=> ["testing", "testing2", "testing3"]