`struct_rusage.ru_utime` and `struct_rusage.ru_stime` are float
seconds.
`setrlimit()` takes a tuple of *integers*, and recent versions of
Python have started triggering warnings:
DeprecationWarning: an integer is required (got type
float). Implicit conversion to integers using __int__ is
deprecated, and may be removed in a future version of Python.
Convert the soft cpu time limit to an integer explicitly to suppress
the warning.
closesodoo/odoo#49710
Signed-off-by: Damien Bouvy (dbo) <dbo@odoo.com>