fix: security, keycloak SSOT, restart policy, arch-test reaktiviert

Co-authored-by: Junie <junie@jetbrains.com>

backend/services/entries/entries-service/src/main/resources/application.yaml

@@ -1,6 +1,12 @@
 spring:
   application:
     name: entries-service
+  security:
+    oauth2:
+      resourceserver:
+        jwt:
+          issuer-uri: ${SPRING_SECURITY_OAUTH2_RESOURCESERVER_JWT_ISSUER_URI:http://localhost:8180/realms/meldestelle}
+          jwk-set-uri: ${SPRING_SECURITY_OAUTH2_RESOURCESERVER_JWT_JWK_SET_URI:http://localhost:8180/realms/meldestelle/protocol/openid-connect/certs}
   cloud:
     consul:
       host: ${CONSUL_HOST:localhost}