saltutil.sync_renderers results in traceback

[mgwilliams]

As mentioned by @dlanderson, syncing the nacl renderer results in a traceback on latest develop branch of salt, at least under certain circumstances. I spent some time digging into the cause of this. I can't quite figure out where it's happening, but to me it seems as if the call to minion_config in nacl.auto is altering the actual minion's live configuration... or something like that.

Once loaded, renderers have access to the __opts__ var. @borgstrom I was playing with ways to utilize that in auto, but don't have anything presentable yet.

[borgstrom]

I'm integrating this directly into salt in a new branch on my fork. I'll have it ready by tonight and will test this out there.