Resolve "update oidc metadata scopes"

oidc/edu-nebraska-its-cssm.xml

@@ -6,7 +6,7 @@
         <md:Extensions>
             <oidcmd:OAuthRPExtensions
                 grant_types="authorization_code"
-                response_types="code"
+                response_types="code+id_token"
                 token_endpoint_auth_method="client_secret_basic"
                 scopes="openid email" />
         </md:Extensions>