improved RBAC generators (#26)

Co-authored-by: Michael Hoennig <michael@hoennig.de>
Reviewed-on: https://dev.hostsharing.net/hostsharing/hs.hsadmin.ng/pulls/26
Reviewed-by: Timotheus Pokorra <timotheus.pokorra@hostsharing.net>

src/test/resources/application.yml

@@ -4,8 +4,9 @@ spring:
             platform: postgres
 
     datasource:
-        url: jdbc:tc:postgresql:15.5-bookworm:///spring_boot_testcontainers
+        url-tc: jdbc:tc:postgresql:15.5-bookworm:///spring_boot_testcontainers
         url-local: jdbc:postgresql://localhost:5432/postgres
+        url: ${spring.datasource.url-tc}
         username: postgres
         password: password