Refactor Gitlab Runner template and install script

Lukáš Fázikrequested to merge
runner-development into testing
  • Move the files into runner folder
  • Rename files to better represent what they are
  • Fix hot resising of the VM inthe template
  • Use virtio (vd) disk for SWAP
  • Set 768MB of RAM and 1 VCPu as default
  • Fix CONCURRENT_JOBS user input in the template
  • Update udev rules and store them in a single file

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