Add precondition test for test environment

[pihme]

Is your feature request related to a problem? Please describe. Currently when the images used in the tests are not properly configured, you get lots of error messages which are hard to decipher.

Describe the solution you'd like Add a simple precondition test:

• Can the images be downloaded?
• Can the images be started?
• Can Zeebe and Zeeqs ports be reached?
• Is there communication between Zeebe and ZeeQs?

This test should run at the start and should work like a precondition, i.e. if this test fails than all other tests will be skipped (I think this should be possible with JUnit5)