Explore if it's possible to push individual service images to DockerHub, only if the "aura-tests" suite succeeds

Parent: [EPIC] AURA Docker Compose Integration Test Suite (#5)

Compare #1 (closed) as a basis. This ticket is mainly researching and to discuss possible routes for implementation

As suggested by @kmohrf find out if this is possible:

• The aura-tests pipeline is triggered by individual service repos.
• The service repo push stage is only completed after the aura-tests pipeline succeeds.

Also think about a manual intervention switch to by-pass this required test outcome.