Spread schedule partial fix for #366 (#385)

* job scheduling on seconds instead of minutes #366

* fixed linelength and spaces around operator

Co-authored-by: jochemthart1 <jchmthrt@gmail.com>

GeoHealthCheck/scheduler.py

@@ -244,7 +244,8 @@ def update_job(resource):
 def add_job(resource):
     LOGGER.info('Starting job for resource=%d' % resource.identifier)
     freq = resource.run_frequency
-    next_run_time = datetime.now() + timedelta(minutes=random.randint(0, freq))
+    next_run_time = datetime.now() + timedelta(
+        seconds=random.randint(0, freq * 60))
     scheduler.add_job(
         run_job, 'interval', args=[resource.identifier, freq],
         minutes=freq, next_run_time=next_run_time, max_instances=1,