lava_wait_jobs: wait_for_jobs: Handle resubmit_jobs only if needed

If resubmit_jobs is empty (most cases), don't call get_finished_jobs() to
avoid confusing output in the job log.

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: Ice7be0a34a6c733fa01867385486782e9a36aa2a
1 file changed