Merge changes from topic 'fix-vm-on-jenkins'

* changes:
  xci: scripts: start-new-vm.sh: Fix paths for default XCI test
  xci: Replace ANSIBLE_VERBOSITY with XCI_ANSIBLE_VERBOSITY
  xci: scripts: start-new-vm.sh: Print dib output when running on CI
  xci: scripts: start-new-vm.sh: Use 'unsafe' cache for the clean vm disk
  xci: xci-deploy.sh: Make sure all local Ansible installations are gone
  xci: scripts: start-new-vm.sh: Do not allow multiple build-dib-os processes