[gnome-runtime-images] Automatically retry a job if it fails.

[Jordan Petridis <jpetridis src gnome org>]

commit b15d51be2c37ae214b9ef74abec6ace64ad43881
Author: Jordan Petridis <jordanpetridis protonmail com>
Date:   Mon May 28 10:00:49 2018 +0000

    Automatically retry a job if it fails.
    
    Most of failures tend to be caused by either the #bigfatdaemon killing itself, or by some kind of timeout.
    
    This will restart the job once, for a total of 2 runs if it happens to fail before declaring a failure 
and start to spam your email.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 58f6db4..482812c 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,6 +26,7 @@ stages:
         - master
         - triggers
         - schedules
+    retry: 1
 
 base:
     stage: base