Resilient watches

Got some help in #coreos to find out what to do about 401 errors. Turns out the answer is to restart the watch with a fresh Get. That ensures metafora will never miss events.

The diff looks like an absolute mess. Basically all I did was put *another* for loop around the initial Get when we start watching, and have 401s continue that outer loop.


bleh
Agreed. There are quite a few magic numbers sprinkled around, but I haven't really considered the right way to expose them yet.