allow sarapprover to create subject access reviews

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

@@ -277,6 +277,7 @@ func init() {
 		Rules: []rbac.PolicyRule{
 			rbac.NewRule("get", "list", "watch").Groups(certificatesGroup).Resources("certificatesigningrequests").RuleOrDie(),
 			rbac.NewRule("update").Groups(certificatesGroup).Resources("certificatesigningrequests/status", "certificatesigningrequests/approval").RuleOrDie(),
+			rbac.NewRule("create").Groups(authorizationGroup).Resources("subjectaccessreviews").RuleOrDie(),
 			eventsRule(),
 		},
 	})

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

@@ -74,6 +74,12 @@ items:
     verbs:
     - update
   - apiGroups:
+    - authorization.k8s.io
+    resources:
+    - subjectaccessreviews
+    verbs:
+    - create
+  - apiGroups:
     - ""
     resources:
     - events