Add sample for OAuth2 RestClient interceptor

Closes gh-294

servlet/spring-boot/java/oauth2/authorization-server/src/main/resources/application.yml

@@ -1,6 +1,11 @@
 server:
   port: 9000
 
+logging:
+  level:
+    org.springframework.security: trace
+
+
 spring:
   security:
     user:
@@ -28,6 +33,24 @@ spring:
                 - "openid"
                 - "profile"
             require-authorization-consent: true
+          login-client-with-messaging:
+            registration:
+              client-id: "login-client-with-messaging"
+              client-secret: "{noop}with-messages"
+              client-authentication-methods:
+                - "client_secret_basic"
+              authorization-grant-types:
+                - "authorization_code"
+                - "refresh_token"
+              redirect-uris:
+                - "http://127.0.0.1:8080/login/oauth2/code/login-client-with-messaging"
+                - "http://127.0.0.1:8080/authorized"
+              scopes:
+                - "openid"
+                - "profile"
+                - "message:read"
+                - "message:write"
+            require-authorization-consent: true
           messaging-client:
             registration:
               client-id: "messaging-client"
@@ -35,7 +58,12 @@ spring:
               client-authentication-methods:
                 - "client_secret_basic"
               authorization-grant-types:
+                - "authorization_code"
+                - "refresh_token"
                 - "client_credentials"
+              redirect-uris:
+                - "http://127.0.0.1:8080/authorized"
               scopes:
                 - "message:read"
-                - "message:write"
+                - "message:write"
+            require-authorization-consent: true