Enable bash-completion as it's installed

Signed-off-by: Laurent Vallar <val@zbla.net>

boxes/build-debian-box.sh

@@ -109,6 +109,10 @@ PACKAGES=(vim curl wget man-db bash-completion ca-certificates)
 chroot ${ROOTFS} apt-get install ${PACKAGES[*]} -y --force-yes
 chroot ${ROOTFS} apt-get upgrade -y --force-yes
 
+# Enable bash-completion
+sed -e '/^#if ! shopt -oq posix; then/,/^#fi/ s/^#\(.*\)/\1/g' \
+  -i ${ROOTFS}/etc/bash.bashrc
+
 
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 # 6 - Configuration management tools