REGTESTS: make use of HAPROXY_ARGS and pass -dM by default

Enabling memory poisonning is often pretty effective for detecting
uninitialized structure fields. Let's enable it by default and let
the user change the arguments at will (e.g. forcing some memory limits
or disabling a poller). This will work with the latest vtest version
to date (02a9bc1).

(cherry picked from commit a4009cd6103a92752db27c3a85051c6adcc832c1)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
1 file changed