tree cd8b618485a4eef10a373b9e4b6ca3303d4ebfd4
parent 4beb93cde360479b453aa0d6df546a12260447fb
author Paul Glass <paul.glass@rackspace.com> 1463002638 -0500
committer Paul Glass <paul.glass@rackspace.com> 1463003036 -0500

Add a config for a minimum ttl

This ensures we can specify the minimum ttl to use when creating zones
or recordsets from random ttls, which includes some refactoring to use
a single method for generating ttls.

Change-Id: I5c8620ff5a15b935ba075bec1f9750dbae4ffb70