(SIO-1877) Fix submitsqueue losing track of job IDs

Use `postpone` instead of `evalmgr_job.delay` in receive_from_workers
for adding env back into evalmgr queue, like Zeus does.

This way, the postpone handler of submitsqueue will be run,
and it will know the new celery task id.

Change-Id: I737d864f5be165dcd68c2c990d34662d01ccfabf

oioioi/workers/management/commands/start_receive_from_workers.py

@@ -1,6 +1,7 @@
 from django.conf import settings
 from django.core.management.base import BaseCommand
 import oioioi
+import oioioi.evalmgr.handlers
 import BaseHTTPServer
 import SocketServer
 import logging
@@ -29,7 +30,12 @@ def do_POST(self):
             if 'workers_jobs.extra_args' in env:
                 del env['workers_jobs.extra_args']
             assert 'workers_jobs.results' in env or 'error' in env
-            oioioi.evalmgr.evalmgr_job.delay(env)
+
+            # HACKHACK: Temporary fix for SIO-1877 - call postpone instead of
+            # evalmgr_job, see discussion:
+            # https://groups.google.com/forum/#!topic/sio2-project/PrFjPMawMP0
+            oioioi.evalmgr.handlers.postpone(env)
+
             self.send_response(200, 'OK')
             self.send_header('Content-type', 'text/plain')
             self.end_headers()