Update dependencies to pick up yaml.v2

dependencies.tsv

@@ -1,8 +1,8 @@
 github.com/juju/loggo	git	8477fc936adf0e382d680310047ca27e128a309a	2015-05-27T03:58:39Z
-github.com/juju/testing	git	f521911d9a79aeb62c051fe18e689796369c5564	2015-05-29T04:40:43Z
+github.com/juju/testing	git	5955efc6d5f61e41a13e4409ec6bae7a6975546f	2015-10-10T23:46:57Z
 github.com/julienschmidt/httprouter	git	b59a38004596b696aca7aa2adccfa68760864d86	2015-04-08T17:04:29Z
 golang.org/x/net	git	446d52dd4018303a13b36097e26d0888aca5d6ef	2015-07-21T02:27:38Z
 golang.org/x/tools	git	c5ca59aab8c27791ce3f820caad760cff360cfc8	2015-07-14T18:01:18Z
-gopkg.in/check.v1	git	64131543e7896d5bcc6bd5a76287eb75ea96c673	2014-10-24T13:38:53Z
-gopkg.in/errgo.v1	git	81357a83344ddd9f7772884874e5622c2a3da21c	2014-10-13T17:33:38Z
-gopkg.in/yaml.v1	git	9f9df34309c04878acc86042b16630b0f696e1de	2014-09-24T16:16:07Z
+gopkg.in/check.v1	git	b3d3430320d4260e5fea99841af984b3badcea63	2015-06-26T10:50:28Z
+gopkg.in/errgo.v1	git	15098963088579c1cd9eb1a7da285831e548390b	2015-07-07T18:34:45Z
+gopkg.in/yaml.v2	git	53feefa2559fb8dfa8d81baad31be332c97d6c77	2015-09-24T14:23:14Z

handler_test.go

@@ -489,6 +489,7 @@ var handlersTests = []struct {
 	callParams: httptesting.JSONCallParams{
 		Method: "POST",
 		URL:    "/m3/99",
+		JSONBody: make(map[string]interface{}),
 	},
 }}