Ilya reported that the "which" utility is not that much portable and is
absent from Fedora. "type -p" is not portable either, and the correct
solution appears to be "command -v", so let's use this for now, we can
change it again in the future in case of problems.
Link: https://www.mail-archive.com/haproxy@formilux.org/msg36332.html
Some reg tests and their dependencies have been renamed. They may be
referenced by the .vtc files. So, this patch modifies also the references
to these dependencies.
Tim Duesterhus
Ilya Shipitsin
Christopher Faulet
Willy Tarreau
Frédéric Lécaille