Support enabling or disabling authentication and authorization

Support enabling or disabling authentication and authorization

- do not set 'basic' spring profile by default in the container
  startup script, thus making it possible not to set a profile [0]
- introduce spring.security.rbacEnabled property. It is true by
  default to not change the default behaviour

[0] the active profile is then determined by the helm chart and
    will remain 'basic' as a default

Issue-ID: SO-4193
Signed-off-by: Fiete Ostkamp <Fiete.Ostkamp@telekom.de>
Change-Id: I9ddeee9a2fb275dde14ed76fb461c46836fd776b