Add Gerrit-CI validations of incoming changes

Change-Id: I33657ec1af78feac756ceaadc1e25ef9ed5fb48a

Jenkinsfile

diff --git a/Jenkinsfile b/Jenkinsfile
new file mode 100644
index 0000000..b26b19f
--- /dev/null
+++ b/Jenkinsfile
@@ -0,0 +1,2 @@
+pluginPipeline(formatCheckId: 'gerritforge:plugins-events-kafka-code-style',
+                buildCheckId: 'gerritforge:plugins-events-kafka-build-test')