Before this commit, in gateway tools, we used to consider URL as a
shortened which was having `/r` in it. However this is not true in
all cases. Any random URL can have `/r` in it but it might not be
a shortened one. It caused random failures on runbot time to time.
This commit makes a bit precise search (`/r/`) to consider URL as
a shortened one and thus avoiding those random test failures on the
runbot.
TaskID - 2276386
closesodoo/odoo#54944
X-original-commit: b8045b49d0693292e6240dfb3acd7c9a6450ad77
Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>