BuildBot is slow for Columnstore tests

Weekly Columnsotre tests take around 10 hours each. Also, the lack of BuildBot workers causes long waiting times.

Possible solutions:

• Investigate GCP resource limitations and use more parallel VMs (allow more BB workers)
• Use HW servers (e.g existing Hetzner servers)
• Optimize build process (e.g check that all debug packages are n ot included, play with VM size)
• Investigate Wookpecker CI
• Possible use of Docker containers