haproxy: one more patch

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
Merge branch 'master' of git://github.com/CleverCloud/CleverCloud-exheres

* 'master' of git://github.com/CleverCloud/CleverCloud-exheres:
  stunnel: adding and masking 5.00pre3
  Adding net-security/stunnel