Implementation and spec tests for floor function

[hunner]

Function and spec test credit to @bkkrw / https://github.com/bkkrw/puppet-stdlib

[adrienthebo]

Since this wasn't an original code contribution, do we have license to use this code?

[hunner]

Oh right. http://projects.puppetlabs.com/users/4204 / @bkkrw, I don't see a license file anywhere in the original cegeka/puppet-stdlib@c0c36d5c88

[willaerk]

Hmm, license confusion indeed. So I did the following:

• Added a LICENSE to the original code in our org https://github.com/cegeka/puppet-stdlib. It's Apache 2.0, so compatible with the rest.
• Created a Redmine ticket (#19804) and a new pull request (PR 135) with this code as user @willaerk (I use the bkkrw user strictly for $DAYJOB), which is a Puppet Redmine user that has signed the CLA.

Hope that is enough, if not let me know.

[adrienthebo]

@willaerk thanks much for the resubmission, this makes this much more straightforward.