[pitivi] ci: Get some information about what is going on in GStreamer when running tests

[Alexandru Băluț <alexbalut src gnome org>]

commit a3e764a39d9ce7dd0e5fe66f2270a4b856f6c3dd
Author: Thibault Saunier <tsaunier igalia com>
Date:   Fri May 17 12:16:48 2019 -0400

    ci: Get some information about what is going on in GStreamer when running tests

 .gitlab-ci.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4073b33d..9b69eb25 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -17,7 +17,7 @@ build:
   script:
     - export BUILDDIR=${HOME}/pitivi
     - export MANIFEST=${BUILDDIR}/build/flatpak/org.pitivi.Pitivi.json
-    - export RUN_IN_SANDBOX="flatpak-builder --filesystem=${BUILDDIR} --filesystem=${CI_PROJECT_DIR} 
--env=PITIVI_DEVELOPMENT=1 --run app ${MANIFEST}"
+    - export RUN_IN_SANDBOX="flatpak-builder --filesystem=${BUILDDIR} --filesystem=${CI_PROJECT_DIR} 
--env=PITIVI_DEVELOPMENT=1 --env=GST_DEBUG=2 --run app ${MANIFEST}"
 
     # Working around the fact that flatpak-builder *requires* the cache dir
     # to be on the same filesystem as the build dir