[mutter/wip/carlosg/ci-review-clone-depth] ci: Ensure we clone a deep enough history for commit review

[Carlos Garnacho <carlosg src gnome org>]

commit 8940d2a968c16242ba2ba285cc60286a3a0e2413
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Apr 24 12:24:12 2019 +0200

    ci: Ensure we clone a deep enough history for commit review
    
    It seems gitlab changed something recently in the default clone depth
    which made MRs with >10 commits to obscurely fail in the review stage.
    As per https://docs.gitlab.com/ee/ci/yaml/#shallow-cloning, bump it
    to 100 to allow bigger MRs.

 .gitlab-ci.yml | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 09b0052c5..f86ffd516 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,6 +7,8 @@ stages:
 
 check-commit-log:
   stage: review
+  variables:
+    GIT_DEPTH: "100"
   script:
     - ./.gitlab-ci/check-commit-log.sh
   only: