From e3ccf2d792378707744940287ac4ab75a0b61a6d Mon Sep 17 00:00:00 2001
From: Guillaume Chauvel <guillaume.chauvel@gmail.com>
Date: Wed, 10 Jun 2020 12:02:47 +0200
Subject: [PATCH] zuul_unreachable: Fix ansible callback exception

When enabling ansible verbose output, there are a lot of exeception
because the key "show_per_host_start" is not defined

This patch adds the fix suggested by
https://github.com/ansible/ansible/issues/69954#issuecomment-641504849

Change-Id: Ib74340aaddec7561402a8dc073549aecfd611215
---
 zuul/ansible/base/callback/zuul_unreachable.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/zuul/ansible/base/callback/zuul_unreachable.py b/zuul/ansible/base/callback/zuul_unreachable.py
index 8c7b85f430..ba63bc62c3 100644
--- a/zuul/ansible/base/callback/zuul_unreachable.py
+++ b/zuul/ansible/base/callback/zuul_unreachable.py
@@ -19,6 +19,16 @@
 # so just put in the __future__ statement.
 from __future__ import absolute_import
 
+DOCUMENTATION = '''
+     callback: zuul_unreachable
+     short_description: Zuul Unreachable
+     description:
+         - Zuul Unreachable
+     type: aggregate
+     extends_documentation_fragment:
+       - default_callback
+'''
+
 import os
 
 from ansible.plugins.callback import default