Add libvirt-exporter jobs for mirror and build

Change-Id: Ie82c37e78a5c2b870e8912558734979a3deb5fc1
diff --git a/jenkins/client/job/debian/packages/extra.yml b/jenkins/client/job/debian/packages/extra.yml
index 298452e..243df79 100644
--- a/jenkins/client/job/debian/packages/extra.yml
+++ b/jenkins/client/job/debian/packages/extra.yml
@@ -137,6 +137,10 @@
               dist: xenial
               build: telegraf
               branch: release-1.2
+            - package: libvirt-exporter
+              dist: xenial
+              build: libvirt-exporter
+              branch: master
           template:
             type: workflow-scm
             concurrent: false