OZG-4095 config: Disable osi2.enable by default for `stage`

src/main/resources/application-stage.yml

@@ -14,7 +14,7 @@ spring:
             token-uri: 'https://idp.serviceportal-stage.schleswig-holstein.de/webidp2/connect/token'
 ozgcloud:
   osiv2-postfach:
-    enabled: true
+    enabled: false
     api:
       resource: 'urn:dataport:osi:postfach:rz2:stage:sh'
       url: 'https://api-gateway-stage.dataport.de:443/api/osi_postfach/1.0.0'

src/test/resources/application-itcase.yml

+ozgcloud:
+  osiv2-postfach:
+    enabled: true
 logging:
   level:
     de.ozgcloud.nachrichten.postfach.osiv2: DEBUG