Use Java 11 for tests in Gerrit-bazel-stable-(3.5|master) jobs

Change-Id: I5b622034355ae9e8ec4cb7f482f6a2ae55acc1eb
diff --git a/jenkins/gerrit-bazel-test.sh b/jenkins/gerrit-bazel-test.sh
index 5a155e9..8665247 100755
--- a/jenkins/gerrit-bazel-test.sh
+++ b/jenkins/gerrit-bazel-test.sh
@@ -1,6 +1,13 @@
 #!/bin/bash -e
 
-. set-java.sh 8
+case "$TARGET_BRANCH" in
+  stable-3.3|stable-3.4)
+    . set-java.sh 8
+    ;;
+  *)
+    . set-java.sh 11
+    ;;
+esac
 
 cd gerrit