test_puma_server.rb - clean up leaky fd's, refactor (#2017)
test_puma_server.rb - clean up leaky fd's, refactor (#2017)

1. test file was leaking fd's, fixed

2. test file was rather wet.  DRY'd up
looker/puma,looker/puma,looker/puma,puma/puma,eileencodes/puma,eileencodes/puma,puma/puma,eileencodes/puma,puma/puma,looker/puma,eileencodes/puma,puma/puma