fix get_file_owner_(user|group) for darwin
Merge pull request #270 from sugamasao/fix-get-file-owner-group-for-darwin

fix get_file_owner_(user|group) for darwin
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Get docker image in initialize
Merge pull request #271 from serverspec/get-docker-image-in-initialize

Get docker image in initialize
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removing an unmatched square bracket in the windows file resource
Merge pull request #272 from maclennann/bugfix/unmatched_bracket_in_windows_file

removing an unmatched square bracket in the windows file resource
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Add file check for named pipe

Checking for named pipes works differently from sockets.
Merge pull request #274 from wanelo/is_pipe

Add file check for named pipe
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Update subproject