freeze go-etcd at version 0.2.0-rc1

third_party/github.com/coreos/go-etcd/etcd/add_child.go

third_party/github.com/coreos/go-etcd/etcd/add_child_test.go

third_party/github.com/coreos/go-etcd/etcd/client.go

third_party/github.com/coreos/go-etcd/etcd/client_test.go

..._party/github.com/coreos/go-etcd/etcd/compare_and_swap.go

...y/github.com/coreos/go-etcd/etcd/compare_and_swap_test.go

third_party/github.com/coreos/go-etcd/etcd/debug.go

third_party/github.com/coreos/go-etcd/etcd/delete.go

third_party/github.com/coreos/go-etcd/etcd/delete_test.go

third_party/github.com/coreos/go-etcd/etcd/get.go

third_party/github.com/coreos/go-etcd/etcd/get_test.go

third_party/github.com/coreos/go-etcd/etcd/requests.go

third_party/github.com/coreos/go-etcd/etcd/response.go

...arty/github.com/coreos/go-etcd/etcd/set_curl_chan_test.go

...party/github.com/coreos/go-etcd/etcd/set_update_create.go

.../github.com/coreos/go-etcd/etcd/set_update_create_test.go

third_party/github.com/coreos/go-etcd/etcd/utils.go

third_party/github.com/coreos/go-etcd/etcd/version.go

third_party/github.com/coreos/go-etcd/etcd/watch.go

third_party/github.com/coreos/go-etcd/etcd/watch_test.go