tests: Increase timeout

Bump the timeout value, to avoid cutoff on emulated architectures on
ci.freebsd.org.

Reported by: Jenkins
Reviewed by: ngie
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D54550

(cherry picked from commit 47015e4546619151f9bff548a3758b72286d04ed)
(cherry picked from commit a551b0524953cbfa4f1035c6d968623e64f4436a)
(cherry picked from commit a4f0a60e05293f3f517324f3ebc41046a79a9feb)