Update raft library to pick up cleanup of temporary snapshot files

vendor/github.com/hashicorp/raft/file_snapshot.go

@@ -384,6 +384,10 @@ func (s *FileSnapshotSink) Close() error {
 	// Close the open handles
 	if err := s.finalize(); err != nil {
 		s.logger.Printf("[ERR] snapshot: Failed to finalize snapshot: %v", err)
+		if delErr := os.RemoveAll(s.dir); delErr != nil {
+			s.logger.Printf("[ERR] snapshot: Failed to delete temporary snapshot directory at path %v: %v", s.dir, delErr)
+			return delErr
+		}
 		return err
 	}
 

vendor/vendor.json

@@ -660,10 +660,10 @@
 			"revisionTime": "2015-11-16T02:03:38Z"
 		},
 		{
-			"checksumSHA1": "bYn+HDmt7YLFvEV6DagMup8mkZE=",
+			"checksumSHA1": "OCPP4JxnuSSmweEL9khCd6OdIts=",
 			"path": "github.com/hashicorp/raft",
-			"revision": "e5e581e04af7c46974b99195347cc0c380c0d841",
-			"revisionTime": "2017-06-09T23:09:26Z",
+			"revision": "e45173826775c4b782961c7b5758ba484b91464b",
+			"revisionTime": "2017-07-10T17:20:01Z",
 			"version": "library-v2-stage-one",
 			"versionExact": "library-v2-stage-one"
 		},