From 596f313b170ee372188ac851036eceebae76bd9c Mon Sep 17 00:00:00 2001
From: Frank Fischer <Frank.Fischer@blue-yonder.com>
Date: Mon, 14 Jan 2019 11:24:32 +0100
Subject: [PATCH] Allow not installing Elasticsearch deb repository key

If a variable is set in Ansible, there is no way to unset
it ever again, i.e. 'null' or '~' do not work.
Since this value is set in defaults we have to check
for content instead of defined.
---
 tasks/elasticsearch-Debian.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tasks/elasticsearch-Debian.yml b/tasks/elasticsearch-Debian.yml
index 41a2256..7b9a735 100644
--- a/tasks/elasticsearch-Debian.yml
+++ b/tasks/elasticsearch-Debian.yml
@@ -42,7 +42,7 @@
     apt_key:
       url: '{{ es_apt_key }}'
       state: present
-    when: es_apt_key is defined
+    when: es_apt_key | string
 
   - name: Debian - Add elasticsearch repository
     apt_repository: