Update bundled nokogiri Gem

Description

Our Coopr Provisioner packages bundle Nokogiri Gem, which bundles libxml2 with vulnerabilities. We should ensure the Nokogiri version shipped with the next Coopr version is not vulnerable to CVE-2016-4658 and CVE-2016-5131.

Release Notes

None
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Assignee

NitinM

Reporter

Chris Gianelloni