CI: skip scheduled builds on forks

tracking bleeding edge changes with some rare platforms or modern
compilers on scheduled basis is not what usually forks do. let's
skip by default in forks, if some fork is interested, it might be
enabled locally

(cherry picked from commit e3af7f832c8b0d7b87bd951e987a1e8dd0a1be03)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
(cherry picked from commit cadf8224a3bb47f33cb5e74a8bd57f10519a7d9e)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
2 files changed