Merge branch 'add-macos-ci-vm'

.gitignore

macos-ci-vm/README.rst

macos-ci-vm/build.sh

macos-ci-vm/packer/ovf.json

macos-ci-vm/packer/provision.json

macos-ci-vm/prepare_iso/create_firstboot_pkg.sh

macos-ci-vm/prepare_iso/prepare_iso.sh

macos-ci-vm/prepare_iso/support/OSInstall.collection

macos-ci-vm/prepare_iso/support/generate_shadowhash

macos-ci-vm/prepare_iso/support/gitlab.jpg

macos-ci-vm/prepare_iso/support/gitlab.png

macos-ci-vm/prepare_iso/support/minstallconfig.xml

macos-ci-vm/prepare_iso/support/pkg-postinstall

macos-ci-vm/prepare_iso/support/user.plist

macos-ci-vm/scripts/add-network-interface-detection.sh

macos-ci-vm/scripts/autologin.sh

macos-ci-vm/scripts/homebrew.sh

macos-ci-vm/scripts/optimize.sh

macos-ci-vm/scripts/shrink.sh

macos-ci-vm/scripts/support/arc4random.py