/usr/share/bash-completion/ is in libguestfs-tools 1:1.36.13-1ubuntu3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/bash-completion/completions/
/usr/share/bash-completion/completions/guestfish
/usr/share/bash-completion/completions/guestmount
/usr/share/bash-completion/completions/guestunmount
/usr/share/bash-completion/completions/virt-alignment-scan
/usr/share/bash-completion/completions/virt-builder
/usr/share/bash-completion/completions/virt-cat
/usr/share/bash-completion/completions/virt-copy-in
/usr/share/bash-completion/completions/virt-copy-out
/usr/share/bash-completion/completions/virt-customize
/usr/share/bash-completion/completions/virt-df
/usr/share/bash-completion/completions/virt-dib
/usr/share/bash-completion/completions/virt-diff
/usr/share/bash-completion/completions/virt-edit
/usr/share/bash-completion/completions/virt-filesystems
/usr/share/bash-completion/completions/virt-format
/usr/share/bash-completion/completions/virt-get-kernel
/usr/share/bash-completion/completions/virt-inspector
/usr/share/bash-completion/completions/virt-log
/usr/share/bash-completion/completions/virt-ls
/usr/share/bash-completion/completions/virt-p2v-make-disk
/usr/share/bash-completion/completions/virt-p2v-make-kickstart
/usr/share/bash-completion/completions/virt-p2v-make-kiwi
/usr/share/bash-completion/completions/virt-rescue
/usr/share/bash-completion/completions/virt-resize
/usr/share/bash-completion/completions/virt-sparsify
/usr/share/bash-completion/completions/virt-sysprep
/usr/share/bash-completion/completions/virt-tail
/usr/share/bash-completion/completions/virt-tar-in
/usr/share/bash-completion/completions/virt-tar-out
/usr/share/bash-completion/completions/virt-v2v
/usr/share/bash-completion/completions/virt-v2v-copy-to-local
/usr/share/bash-completion/completions/virt-win-reg