From ac00c9ced7f05c087f5465224e22eed8e6978d5e Mon Sep 17 00:00:00 2001
From: klshxsh <klshxsh@users.noreply.github.com>
Date: Mon, 12 Oct 2015 12:41:00 +0100
Subject: [PATCH] changed 'string' to 'percent' for _serial

Note that this allows both integers (e.g. 3) and percentages (e.g. "30%")
Also changed default back to 0 rather than '0'
---
 lib/ansible/playbook/play.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ansible/playbook/play.py b/lib/ansible/playbook/play.py
index a017ac4a719..a24eb133ccf 100644
--- a/lib/ansible/playbook/play.py
+++ b/lib/ansible/playbook/play.py
@@ -87,7 +87,7 @@ class Play(Base, Taggable, Become):
     _any_errors_fatal    = FieldAttribute(isa='bool', default=False, always_post_validate=True)
     _force_handlers      = FieldAttribute(isa='bool', always_post_validate=True)
     _max_fail_percentage = FieldAttribute(isa='percent', always_post_validate=True)
-    _serial              = FieldAttribute(isa='string', default='0', always_post_validate=True)
+    _serial              = FieldAttribute(isa='percent', default=0, always_post_validate=True)
     _strategy            = FieldAttribute(isa='string', default='linear', always_post_validate=True)
 
     # =================================================================================