bash-completion: fixed support for VE names with dashes

Commit 7dd83295d36d5d83e98f5bc5bc0cfdbfa2c05141 introduced support
for VE names in bash_completion script. Unfortunately it stripped
all the dashes ("-") from VE names, so it was not possible to use
it with names such as deb-build-amd64.

This patch fixes it.
1 file changed