Update vendor

vendor/github.com/onsi/gomega/matchers/contain_elements_matcher.go

@@ -0,0 +1,44 @@
+package matchers
+
+import (
+	"fmt"
+
+	"github.com/onsi/gomega/format"
+	"github.com/onsi/gomega/matchers/support/goraph/bipartitegraph"
+)
+
+type ContainElementsMatcher struct {
+	Elements        []interface{}
+	missingElements []interface{}
+}
+
+func (matcher *ContainElementsMatcher) Match(actual interface{}) (success bool, err error) {
+	if !isArrayOrSlice(actual) && !isMap(actual) {
+		return false, fmt.Errorf("ContainElements matcher expects an array/slice/map.  Got:\n%s", format.Object(actual, 1))
+	}
+
+	matchers := matchers(matcher.Elements)
+	bipartiteGraph, err := bipartitegraph.NewBipartiteGraph(valuesOf(actual), matchers, neighbours)
+	if err != nil {
+		return false, err
+	}
+
+	edges := bipartiteGraph.LargestMatching()
+	if len(edges) == len(matchers) {
+		return true, nil
+	}
+
+	_, missingMatchers := bipartiteGraph.FreeLeftRight(edges)
+	matcher.missingElements = equalMatchersToElements(missingMatchers)
+
+	return false, nil
+}
+
+func (matcher *ContainElementsMatcher) FailureMessage(actual interface{}) (message string) {
+	message = format.Message(actual, "to contain elements", matcher.Elements)
+	return appendMissingElements(message, matcher.missingElements)
+}
+
+func (matcher *ContainElementsMatcher) NegatedFailureMessage(actual interface{}) (message string) {
+	return format.Message(actual, "not to contain elements", matcher.Elements)
+}