Make stat command use '-c' for Yocto OS

[michaellihs]

Description

When running inspec on a target with Yocto linux, the stat command used the --printf option instead of the -c switch. This causes e.g. the checking of file owners to break due to yocto using a different implementation of stat.

Related Issue

#558

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New content (non-breaking change)
• Breaking change (a content change which would break existing functionality or processes)

Checklist:

• I have read the CONTRIBUTING document.

[chef-expeditor]

Hello michaellihs! Thanks for the pull request!

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Thank you for contributing!

[codeclimate]

Code Climate has analyzed commit 6d85d37 and detected 4 issues on this pull request.

Here's the issue category breakdown:

Category	Count
Style	4

View more on Code Climate.

[miah]

Thanks @michaellihs =)

[clintoncwolfe]

Thank you!