Bump go-openapi dependencies to preferred version

Signed-off-by: He Xiaoxi <xxhe@alauda.io>

vendor/github.com/go-openapi/swag/post_go19.go

@@ -1,3 +1,17 @@
+// Copyright 2015 go-swagger maintainers
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 // +build go1.9
 
 package swag
@@ -48,6 +62,6 @@ func (m *indexOfInitialisms) sorted() (result []string) {
 		result = append(result, k)
 		return true
 	})
-	sort.Sort(sort.Reverse(byLength(result)))
+	sort.Sort(sort.Reverse(byInitialism(result)))
 	return
 }