Build events-log master against Gerrit 3.7

Change-Id: Id45ee80147faa22083be5377eeaef7d29752e382
diff --git a/jenkins/gerrit-bazel-plugin-events-log.yaml b/jenkins/gerrit-bazel-plugin-events-log.yaml
index d4acd62..d8e02b7 100644
--- a/jenkins/gerrit-bazel-plugin-events-log.yaml
+++ b/jenkins/gerrit-bazel-plugin-events-log.yaml
@@ -6,6 +6,7 @@
             - master
           gerrit-branch:
             - master
+            - stable-3.7
             - stable-3.6
             - stable-3.5
             - stable-3.4