Mark pub/test/lish/many_files_test as failing on windows
Mark pub/test/lish/many_files_test as failing on windows

TBR

R=nweiz@google.com
BUG=22996

Review URL: https://codereview.chromium.org//1017683007

git-svn-id: a962b240025cf0577aa172e20f49ccb159ba6be1@44706 260f80e4-7a28-3924-810f-c04153c831b5

maxwellpeterson-wf/pub,cjkao/dart-pub,dart-lang/pub,dart-lang/pub,computmaxer/pub