Set Gerrit to 3.2.10 on test/docker

Change-Id: I740bedcb6357200f341a70f7fd597d5eab80e885

src/test/docker/gerrit/Dockerfile

diff --git a/src/test/docker/gerrit/Dockerfile b/src/test/docker/gerrit/Dockerfile
index 5f455d4..5997e7d 100644
--- a/src/test/docker/gerrit/Dockerfile
+++ b/src/test/docker/gerrit/Dockerfile
@@ -1,6 +1,6 @@
-FROM gerritcodereview/gerrit:3.1.12
+FROM gerritcodereview/gerrit:3.2.10
 
-ENV GERRIT_BRANCH=stable-3.1
+ENV GERRIT_BRANCH=stable-3.2
 
 ENV GERRIT_CI_URL=https://gerrit-ci.gerritforge.com/job