[gnome-calculator/wip/3v1n0/ci-tests] gitlab-ci: only keep build artifacts for 2 hours

[Marco Trevisan <marcotrevi src gnome org>]

commit d0d8b2ed3e3dd2b82d2b71c1cfb941298f167269
Author: Marco Trevisan (Treviño) <mail 3v1n0 net>
Date:   Tue Sep 11 17:27:21 2018 +0200

    gitlab-ci: only keep build artifacts for 2 hours
    
    Since the test timeout is set to 1 hour, we are sure that these
    will be kept enough for the test job to be ran, even in case
    of mayor delays.

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 53397fc7..0835b0ee 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,6 +17,7 @@
   artifacts:
     paths:
       - _build/
+    expire_in: 2 hours
 
 .test_template: &meson_test
   stage: test