jenkins/ci.jpl: Increase wait job timeout by 30min

To 5.5h total. Recent jobs shows that there's usually under a dozen jobs
which don't fit into the current timeout.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: Id1d572ec850416f7322b0f3416694ab5d21197c8
1 file changed