Add job to build influxdb-relay package

Change-Id: I0ca49cd58d245499d36f39788a7c7e63f74c2b51
diff --git a/jenkins/client/job/debian/packages/extra.yml b/jenkins/client/job/debian/packages/extra.yml
index c7df567..ec40836 100644
--- a/jenkins/client/job/debian/packages/extra.yml
+++ b/jenkins/client/job/debian/packages/extra.yml
@@ -165,6 +165,10 @@
               dist: xenial
               build: jmx-exporter
               branch: master
+            - package: influxdb-relay
+              dist: xenial
+              build: influxdb-relay
+              branch: master
           template:
             type: workflow-scm
             concurrent: false