Skip vendored gem files #329
                
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/cc @zendesk/dingo
Description
Skip files in vendor just as files in tmp are skipped.
When installing gems using bundler on a CI system the gems end up in the vendor/bundle folder pr default and these files are not supposed to be included in the package, so they should be skipped. Also locally if installing gems in vendor/ I get a "Too many open files" error as each AppFile is opened upon instantiation.
Before merging this PR
Risks