Add Gerrit-CI validation

Bug: Issue 15120
Change-Id: I33ab6a89d9da8b0c62f711fcf64bc1cb500b3dac

Jenkinsfile

diff --git a/Jenkinsfile b/Jenkinsfile
new file mode 100644
index 0000000..48cce50
--- /dev/null
+++ b/Jenkinsfile
@@ -0,0 +1,2 @@
+pluginPipeline(formatCheckId: 'gerritforge:plugins-aws-dynamodb-refdb-code-style',
+                buildCheckId: 'gerritforge:plugins-aws-dynamodb-refdb-build-test')