Build 'analytics' stable-3.7 against Gerrit 'stable-3.7' branch

Change-Id: I0fa96a570027ce607508fdaecfe7b0ff1563a752
diff --git a/jenkins/gerrit-sbt-plugin-analytics.yaml b/jenkins/gerrit-sbt-plugin-analytics.yaml
index d004a92..e23a62e 100644
--- a/jenkins/gerrit-sbt-plugin-analytics.yaml
+++ b/jenkins/gerrit-sbt-plugin-analytics.yaml
@@ -4,6 +4,7 @@
       - 'plugin-{name}-sbt-{branch}':
           branch:
             - master
+            - stable-3.7
             - stable-3.6
             - stable-3.5
             - stable-3.4