LAVA: Wait 2s before re-submit failed jobs

LAVA jobs are likely to fail under heavy loads.
Wait 2s before re-submit failed jobs to get LAVA have a rest.

Signed-off-by: Xinyu Zhang <xinyu.zhang@arm.com>
Change-Id: I667ba52a48aaf56bee985949f95bb33b57aff0ae
diff --git a/lava_helper/lava_wait_jobs.py b/lava_helper/lava_wait_jobs.py
index 5f0ae42..90c0f5e 100755
--- a/lava_helper/lava_wait_jobs.py
+++ b/lava_helper/lava_wait_jobs.py
@@ -89,6 +89,7 @@
 def resubmit_failed_jobs(jobs, user_args):
     if not jobs:
         return []
+    time.sleep(2) # be friendly to LAVA
     failed_job = []
     os.makedirs('failed_jobs', exist_ok=True)
     for job_id, info in jobs.items():