Update boltdb dependency to fix golang 1.7 intermittent failures

We have a old boltdb/bolt, etcd has moved to newer boltdb, so we should
do the same. Specifically this change needs to be in our tree:
92410e0673

as this fixes intermittent issues we see in our CI runs. So in this
PR, we vendor the v1.3.0 version of boltdb/bolt.

Fixes #43973

Godeps/Godeps.json

@@ -313,8 +313,8 @@
 		},
 		{
 			"ImportPath": "github.com/boltdb/bolt",
-			"Comment": "v1.2.1",
-			"Rev": "dfb21201d9270c1082d5fb0f07f500311ff72f18"
+			"Comment": "v1.3.0",
+			"Rev": "583e8937c61f1af6513608ccc75c97b6abdf4ff9"
 		},
 		{
 			"ImportPath": "github.com/chai2010/gettext-go/gettext",

staging/src/k8s.io/apiserver/Godeps/Godeps.json

@@ -24,7 +24,7 @@
 		},
 		{
 			"ImportPath": "github.com/boltdb/bolt",
-			"Rev": "dfb21201d9270c1082d5fb0f07f500311ff72f18"
+			"Rev": "583e8937c61f1af6513608ccc75c97b6abdf4ff9"
 		},
 		{
 			"ImportPath": "github.com/coreos/etcd/alarm",

vendor/github.com/boltdb/bolt/README.md

@@ -1,4 +1,4 @@
-Bolt [![Coverage Status](https://coveralls.io/repos/boltdb/bolt/badge.svg?branch=master)](https://coveralls.io/r/boltdb/bolt?branch=master) [![GoDoc](https://godoc.org/github.com/boltdb/bolt?status.svg)](https://godoc.org/github.com/boltdb/bolt) ![Version](https://img.shields.io/badge/version-1.0-green.svg)
+Bolt [![Coverage Status](https://coveralls.io/repos/boltdb/bolt/badge.svg?branch=master)](https://coveralls.io/r/boltdb/bolt?branch=master) [![GoDoc](https://godoc.org/github.com/boltdb/bolt?status.svg)](https://godoc.org/github.com/boltdb/bolt) ![Version](https://img.shields.io/badge/version-1.2.1-green.svg)
 ====
 
 Bolt is a pure Go key/value store inspired by [Howard Chu's][hyc_symas]
@@ -313,7 +313,7 @@ func (s *Store) CreateUser(u *User) error {
         // Generate ID for the user.
         // This returns an error only if the Tx is closed or not writeable.
         // That can't happen in an Update() call so I ignore the error check.
-        id, _ = b.NextSequence()
+        id, _ := b.NextSequence()
         u.ID = int(id)
 
         // Marshal user data into bytes.
@@ -557,7 +557,7 @@ if err != nil {
 Bolt is able to run on mobile devices by leveraging the binding feature of the
 [gomobile](https://github.com/golang/mobile) tool. Create a struct that will
 contain your database logic and a reference to a `*bolt.DB` with a initializing
-contstructor that takes in a filepath where the database file will be stored.
+constructor that takes in a filepath where the database file will be stored.
 Neither Android nor iOS require extra permissions or cleanup from using this method.
 
 ```go
@@ -807,6 +807,7 @@ them via pull request.
 
 Below is a list of public, open source projects that use Bolt:
 
+* [BoltDbWeb](https://github.com/evnix/boltdbweb) - A web based GUI for BoltDB files.
 * [Operation Go: A Routine Mission](http://gocode.io) - An online programming game for Golang using Bolt for user accounts and a leaderboard.
 * [Bazil](https://bazil.org/) - A file system that lets your data reside where it is most convenient for it to reside.
 * [DVID](https://github.com/janelia-flyem/dvid) - Added Bolt as optional storage engine and testing it against Basho-tuned leveldb.
@@ -825,7 +826,6 @@ Below is a list of public, open source projects that use Bolt:
 * [cayley](https://github.com/google/cayley) - Cayley is an open-source graph database using Bolt as optional backend.
 * [bleve](http://www.blevesearch.com/) - A pure Go search engine similar to ElasticSearch that uses Bolt as the default storage backend.
 * [tentacool](https://github.com/optiflows/tentacool) - REST api server to manage system stuff (IP, DNS, Gateway...) on a linux server.
-* [SkyDB](https://github.com/skydb/sky) - Behavioral analytics database.
 * [Seaweed File System](https://github.com/chrislusf/seaweedfs) - Highly scalable distributed key~file system with O(1) disk read.
 * [InfluxDB](https://influxdata.com) - Scalable datastore for metrics, events, and real-time analytics.
 * [Freehold](http://tshannon.bitbucket.org/freehold/) - An open, secure, and lightweight platform for your files and data.
@@ -842,9 +842,11 @@ Below is a list of public, open source projects that use Bolt:
 * [Go Report Card](https://goreportcard.com/) - Go code quality report cards as a (free and open source) service.
 * [Boltdb Boilerplate](https://github.com/bobintornado/boltdb-boilerplate) - Boilerplate wrapper around bolt aiming to make simple calls one-liners.
 * [lru](https://github.com/crowdriff/lru) - Easy to use Bolt-backed Least-Recently-Used (LRU) read-through cache with chainable remote stores.
-* [Storm](https://github.com/asdine/storm) - A simple ORM around BoltDB.
+* [Storm](https://github.com/asdine/storm) - Simple and powerful ORM for BoltDB.
 * [GoWebApp](https://github.com/josephspurrier/gowebapp) - A basic MVC web application in Go using BoltDB.
 * [SimpleBolt](https://github.com/xyproto/simplebolt) - A simple way to use BoltDB. Deals mainly with strings.
 * [Algernon](https://github.com/xyproto/algernon) - A HTTP/2 web server with built-in support for Lua. Uses BoltDB as the default database backend.
+* [MuLiFS](https://github.com/dankomiocevic/mulifs) - Music Library Filesystem creates a filesystem to organise your music files.
+* [GoShort](https://github.com/pankajkhairnar/goShort) - GoShort is a URL shortener written in Golang and BoltDB for persistent key/value storage and for routing it's using high performent HTTPRouter.
 
 If you are using Bolt in a project please send a pull request to add it to the list.

vendor/github.com/boltdb/bolt/freelist.go

@@ -166,12 +166,16 @@ func (f *freelist) read(p *page) {
 	}
 
 	// Copy the list of page ids from the freelist.
-	ids := ((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[idx:count]
-	f.ids = make([]pgid, len(ids))
-	copy(f.ids, ids)
+	if count == 0 {
+		f.ids = nil
+	} else {
+		ids := ((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[idx:count]
+		f.ids = make([]pgid, len(ids))
+		copy(f.ids, ids)
 
-	// Make sure they're sorted.
-	sort.Sort(pgids(f.ids))
+		// Make sure they're sorted.
+		sort.Sort(pgids(f.ids))
+	}
 
 	// Rebuild the page cache.
 	f.reindex()
@@ -189,7 +193,9 @@ func (f *freelist) write(p *page) error {
 
 	// The page.count can only hold up to 64k elements so if we overflow that
 	// number then we handle it by putting the size in the first element.
-	if len(ids) < 0xFFFF {
+	if len(ids) == 0 {
+		p.count = uint16(len(ids))
+	} else if len(ids) < 0xFFFF {
 		p.count = uint16(len(ids))
 		copy(((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[:], ids)
 	} else {

vendor/github.com/boltdb/bolt/node.go

@@ -201,6 +201,11 @@ func (n *node) write(p *page) {
 	}
 	p.count = uint16(len(n.inodes))
 
+	// Stop here if there are no items to write.
+	if p.count == 0 {
+		return
+	}
+
 	// Loop over each item and write it to the page.
 	b := (*[maxAllocSize]byte)(unsafe.Pointer(&p.ptr))[n.pageElementSize()*len(n.inodes):]
 	for i, item := range n.inodes {

vendor/github.com/boltdb/bolt/page.go

@@ -62,6 +62,9 @@ func (p *page) leafPageElement(index uint16) *leafPageElement {
 
 // leafPageElements retrieves a list of leaf nodes.
 func (p *page) leafPageElements() []leafPageElement {
+	if p.count == 0 {
+		return nil
+	}
 	return ((*[0x7FFFFFF]leafPageElement)(unsafe.Pointer(&p.ptr)))[:]
 }
 
@@ -72,6 +75,9 @@ func (p *page) branchPageElement(index uint16) *branchPageElement {
 
 // branchPageElements retrieves a list of branch nodes.
 func (p *page) branchPageElements() []branchPageElement {
+	if p.count == 0 {
+		return nil
+	}
 	return ((*[0x7FFFFFF]branchPageElement)(unsafe.Pointer(&p.ptr)))[:]
 }