saltstack/salt — pull request #13373 by seacrib (2014-06-10 21:24:46+00:00)
Title: A deep copy should be used for default options.

Use deep copy to get default master and minion options to avoid altering
them.

This fixes an issue encountered when defining grains for multiple nodes in a salt-cloud map file.
Nodes deployed later in the process were getting grains for previously deployed nodes.