[gnome-build-meta] Use elastic DO runners for now

[Javier Jardón Cabezas <jjardon src gnome org>]

commit be055ed94da06e2f28f2d3cb925e65795b4c9d66
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Mar 29 13:14:50 2018 +0100

    Use elastic DO runners for now
    
    We can not use current ones because I/O problems,
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-build-meta/issues/23

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 59a18dd..cadb9fc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -25,7 +25,7 @@ bst-build-gnome-core:
   stage: build
   dependencies: []
   tags:
-    - non_aws
+    - do
   script:
     - ${BST} build --track-all core.bst
   # Store all the downloaded git and ostree repos in the distributed cache.