Add Jest tests to the lint job

Change-Id: If0d63bc11f264e6e7287afdd0940d0f3b4ac1cf7
diff --git a/playbooks/lint/run.yaml b/playbooks/lint/run.yaml
index a82cfc6..7a217b8 100644
--- a/playbooks/lint/run.yaml
+++ b/playbooks/lint/run.yaml
@@ -4,3 +4,4 @@
       make_target: build_test_extension
     - role: web-ext-lint
       source_dir: "dist/gecko"
+    - role: test