coreos/fleet — pull request #551 by jonboulle (2014-06-19 05:08:35+00:00)
Title: fix(fleetctl): sort metadata explicitly by keys

In [go1.3](http://golang.org/doc/go1.3#map), keys for small maps are now
actually no longer iterated over in a consistent order. This caused the list_machines_test
to fail as it relies on the metadata to be sorted. Sorting it provides a more consistent
experience for users too.