[rubygems/rubygems] Remove appveyor from spec.files default ignore list
appveyor
spec.files
https://github.com/rubygems/rubygems/commit/2f2046c97b
[rubygems/rubygems] Remove
appveyorfromspec.filesdefault ignore listhttps://github.com/rubygems/rubygems/commit/2f2046c97b