edge case protection against starting a worker as part of a device_group that does not exist yet

Author: Naor Livne

worker.py

@@ -253,7 +253,8 @@ def get_device_group_info(nebula_connection_object, device_group_to_get_info):
     while local_device_group_info["status_code"] == 403 and \
             local_device_group_info["reply"]["device_group_exists"] is False:
         print("device_group " + device_group + " doesn't exist in nebula cluster, waiting for it to be created")
-        time.sleep(5)
+        local_device_group_info = get_device_group_info(nebula_connection, device_group)
+        time.sleep(nebula_manager_check_in_time)
 
     # start all apps that are set to running on boot
     for nebula_app in local_device_group_info["reply"]["apps"]: