[manual] Add a manage.py command to import realm filters

This must be run manually on staging after deployment. Once it has been run,
it can be deleted. It only needs to be run on staging, not prod.

(imported from commit 79252c23ba8cda93500a18aa7b02575f406dd379)

zerver/management/commands/import_realm_filters.py

@@ -0,0 +1,27 @@
+from __future__ import absolute_import
+
+from django.core.management.base import BaseCommand
+
+from zerver.models import RealmFilter, get_realm
+
+import logging
+
+class Command(BaseCommand):
+    help = """Imports realm filters to database"""
+
+    def handle(self, *args, **options):
+        realm_filters = {
+            "zulip.com": [
+                ("#(?P<id>[0-9]{2,8})", "https://trac.zulip.net/ticket/%(id)s"),
+                ],
+            "mit.edu/zephyr_mirror": [],
+        }
+
+        for domain, filters in realm_filters.iteritems():
+            realm = get_realm(domain)
+            if realm is None:
+                logging.error("Failed to get realm for domain %s" % (domain,))
+                continue
+            for filter in filters:
+                RealmFilter(realm=realm, pattern=filter[0], url_format_string=filter[1]).save()
+                logging.info("Created realm filter %s for %s" % (filter[0], domain))