add readiness-hook check_blueprints

abra.sh

@@ -386,6 +386,22 @@ Brand.objects.filter(default=True).delete()
   apply_blueprints
 }
 
+check_blueprints() {
+  failed_blueprints=$(/manage.py shell -c """
+print(','.join(b.path for b in BlueprintInstance.objects.exclude(status='successful')))
+""" 2>&1 | quieten | tail -n1)
+
+  if [ -z "$failed_blueprints" ]; then
+    echo "All Blueprints Successful"
+    return 0
+  fi
+
+  echo "These Blueprints failed:"
+  echo "$failed_blueprints" | tr ',' '\n'
+
+  return 1
+}
+
 get_certificate() {
   /manage.py shell -c """
 provider_name='$1'