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/search/util.go

@@ -40,3 +40,30 @@ func MergeTermLocationMaps(rv, other TermLocationMap) TermLocationMap {
 	}
 	return rv
 }
+
+func MergeFieldTermLocations(dest []FieldTermLocation, matches []*DocumentMatch) []FieldTermLocation {
+	n := len(dest)
+	for _, dm := range matches {
+		n += len(dm.FieldTermLocations)
+	}
+	if cap(dest) < n {
+		dest = append(make([]FieldTermLocation, 0, n), dest...)
+	}
+
+	for _, dm := range matches {
+		for _, ftl := range dm.FieldTermLocations {
+			dest = append(dest, FieldTermLocation{
+				Field: ftl.Field,
+				Term:  ftl.Term,
+				Location: Location{
+					Pos:            ftl.Location.Pos,
+					Start:          ftl.Location.Start,
+					End:            ftl.Location.End,
+					ArrayPositions: append(ArrayPositions(nil), ftl.Location.ArrayPositions...),
+				},
+			})
+		}
+	}
+
+	return dest
+}