Merge pull request #57368 from brendandburns/version

Automatic merge from submit-queue (batch tested with PRs 57349, 57368). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add '/version/' to the system:discovery role, since that's what the spec says.

See: https://github.com/kubernetes-client/java/issues/153

```release-note
Add the path '/version/' to the `system:discovery` cluster role.
```

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy.go

@@ -169,7 +169,7 @@ func ClusterRoles() []rbac.ClusterRole {
 			ObjectMeta: metav1.ObjectMeta{Name: "system:discovery"},
 			Rules: []rbac.PolicyRule{
 				rbac.NewRule("get").URLs(
-					"/healthz", "/version",
+					"/healthz", "/version", "/version/",
 					// remove once swagger 1.2 support is removed
 					"/swaggerapi", "/swaggerapi/*",
 					// do not expand this pattern for openapi discovery docs

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/testdata/cluster-roles.yaml

@@ -640,6 +640,7 @@ items:
     - /swaggerapi
     - /swaggerapi/*
     - /version
+    - /version/
     verbs:
     - get
 - apiVersion: rbac.authorization.k8s.io/v1