Use Spring Boot starter in samples

Closes gh-1187

samples/default-authorizationserver/src/main/resources/application.yml

@@ -3,8 +3,34 @@ server:
 
 logging:
   level:
-    root: INFO
-    org.springframework.web: INFO
-    org.springframework.security: INFO
-    org.springframework.security.oauth2: INFO
-#    org.springframework.boot.autoconfigure: DEBUG
+    org.springframework.security: trace
+
+spring:
+  security:
+    user:
+      name: user1
+      password: password
+    oauth2:
+      authorizationserver:
+        client:
+          messaging-client:
+            registration:
+              client-id: "messaging-client"
+              client-secret: "{noop}secret"
+              client-authentication-methods:
+                - "client_secret_basic"
+              authorization-grant-types:
+                - "authorization_code"
+                - "refresh_token"
+                - "client_credentials"
+              redirect-uris:
+                - "http://127.0.0.1:8080/login/oauth2/code/messaging-client-oidc"
+                - "http://127.0.0.1:8080/authorized"
+              post-logout-redirect-uris:
+                - "http://127.0.0.1:8080/logged-out"
+              scopes:
+                - "openid"
+                - "profile"
+                - "message.read"
+                - "message.write"
+            require-authorization-consent: true