Update bleve dependency to latest master revision (#6100)

* update bleve to master b17287a86f6cac923a5d886e10618df994eeb54b6724eac2e3b8dde89cfbe3a2

* remove unused pkg from dep file

* change bleve from master to recent revision

vendor/github.com/blevesearch/bleve/index.go

@@ -21,6 +21,7 @@ import (
 	"github.com/blevesearch/bleve/index"
 	"github.com/blevesearch/bleve/index/store"
 	"github.com/blevesearch/bleve/mapping"
+	"github.com/blevesearch/bleve/size"
 )
 
 // A Batch groups together multiple Index and Delete
@@ -32,6 +33,9 @@ import (
 type Batch struct {
 	index    Index
 	internal *index.Batch
+
+	lastDocSize uint64
+	totalSize   uint64
 }
 
 // Index adds the specified index operation to the
@@ -47,9 +51,22 @@ func (b *Batch) Index(id string, data interface{}) error {
 		return err
 	}
 	b.internal.Update(doc)
+
+	b.lastDocSize = uint64(doc.Size() +
+		len(id) + size.SizeOfString) // overhead from internal
+	b.totalSize += b.lastDocSize
+
 	return nil
 }
 
+func (b *Batch) LastDocSize() uint64 {
+	return b.lastDocSize
+}
+
+func (b *Batch) TotalDocsSize() uint64 {
+	return b.totalSize
+}
+
 // IndexAdvanced adds the specified index operation to the
 // batch which skips the mapping.  NOTE: the bleve Index is not updated
 // until the batch is executed.
@@ -102,6 +119,24 @@ func (b *Batch) Reset() {
 	b.internal.Reset()
 }
 
+func (b *Batch) Merge(o *Batch) {
+	if o != nil && o.internal != nil {
+		b.internal.Merge(o.internal)
+		if o.LastDocSize() > 0 {
+			b.lastDocSize = o.LastDocSize()
+		}
+		b.totalSize = uint64(b.internal.TotalDocSize())
+	}
+}
+
+func (b *Batch) SetPersistedCallback(f index.BatchCallback) {
+	b.internal.SetPersistedCallback(f)
+}
+
+func (b *Batch) PersistedCallback() index.BatchCallback {
+	return b.internal.PersistedCallback()
+}
+
 // An Index implements all the indexing and searching
 // capabilities of bleve.  An Index can be created
 // using the New() and Open() methods.