Pull images before test start, using minimal python aiv kit deploy code

Closes #245 (closed)

It accumulated a bit, I tried to keep it as contained as possible, but feature require one another:

• Pulling images in a controlled queue is best done with python, so part of what could be in Makefile is now in python
• Adding tests for pulling images needs few more python deploy commands
• It's necessary to split jobs to kind and non-kind, since kind only runs on Zeuthen, but sonar is only accessible from Hamburg. This could may be be changed, but it's faster to split anyway.
• Combining test report and coverage from different jobs is necessary, so coverage needs to be collected from several files.