Fix CRD validation error for 'items' field

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

vendor/github.com/go-openapi/spec/BUILD

@@ -4,6 +4,7 @@ go_library(
     name = "go_default_library",
     srcs = [
         "bindata.go",
+        "cache.go",
         "contact_info.go",
         "debug.go",
         "expander.go",
@@ -12,6 +13,7 @@ go_library(
         "info.go",
         "items.go",
         "license.go",
+        "normalizer.go",
         "operation.go",
         "parameter.go",
         "path_item.go",
@@ -20,10 +22,12 @@ go_library(
         "response.go",
         "responses.go",
         "schema.go",
+        "schema_loader.go",
         "security_scheme.go",
         "spec.go",
         "swagger.go",
         "tag.go",
+        "unused.go",
         "xml_object.go",
     ],
     importmap = "k8s.io/kubernetes/vendor/github.com/go-openapi/spec",